Next Generation Partners

Leading Associates

Firms To Watch: Group litigation: Claimant

Chaya Hanoomanjee and Alicia Theuma head the collective actions team at Gateley Legal. The dedicated team combines extensive group action expertise with a deep knowledge of the litigation funding market.

Group litigation: Claimant in London

Hausfeld & Co LLP

Hausfeld & Co LLP‘s group litigation practice handles large-scale, complex group actions with ‘precision, coordination and unwavering strategic focus’. The team is particularly recognised for its competition prowess, notably acting on leading matters under the CAT collective regime. ESG litigation is another strength of the practice. Nicola Boyle is a ‘brilliant leader’, and boasts extensive expertise on technical elements of damage recovery and collective redress, while Lesley Hannah is praised for ‘achieving fantastic results’. Anthony Maton acts on a range of high-value financial services cases, while Luke Streatfeild is adept at handling collective proceedings on the claimant and defence side. The team has seen significant arrivals in the last year, including Joanna Christoforou and Daniel Hunt from Morgan, Lewis & Bockius UK LLP and Freshfields, respectively.

Responsables de la pratique:

Nicola Boyle


Autres avocats clés:

Lesley Hannah; Anthony Maton; Luke Streatfeild; Joanna Christoforou; Daniel Hunt; Jonothan Broadbent


Les références

‘Hausfeld have a very impressive Group Litigation practice. They provide an excellent service and, given their expertise in conducting large-scale claims, can deal with the factual, legal and procedural complexities with ease.’

‘Nicola Boyle is a brilliant leader of the time, who is extremely able and very easy to work with. She is supported by excellent associates, such as Jonothan Broadbent. I have also been impressed by other partners, such as Lesley Hannah, who achieves fantastic results.’

‘Hausfeld delivered in our follow-on group litigation with precision, coordination, and unwavering strategic focus. Their ability to manage a complex, multi-claimant, multi-defendant case with agility and effectiveness was extraordinary. Communication was seamless, risks were clearly explained, and we felt in control at every stage. ’

Principaux clients

Dr Rachael Kent (Class Representative)


Elizabeth Coll (Class Representative)


Consumers’ Association Which? – Qualcomm


Ad Tech Collective Action LLP [LLP members: Charles Arthur, Claudio Pollack, and Kate Wellington]


Nikki Stopford


Phillip Evans, former Inquiry Chair at the Competition and Markets Authority


Dutch Trucks: more than 4,500 assignors from 37 European countries and partnership with various associations insurers and professional organisations in France and the Netherlands.


Trucks claims before the CAT for: Balfour Beatty (multinational construction business), BOC (industrial gas company), Gist, Zamenhof, (both major logistics firms) and Whitbread Plc (a leading hospitality business).


Spanish dairy farmers (Milk cartel): over 7000 farmers


Numerous businesses and tens of thousands of individuals who have purchased or leased affected Mercedes vehicles installed with illegal ‘defeat devices’ which altered the apparent emissions of their vehicles


John Armour


Principaux dossiers


  • Acted for Dr Rachael Kent in Kent v Apple in the first trial against a tech giant for a claim brought under the CAT collective regime for 7 weeks in January and February 2025. With 19.6 million, it constitutes the largest class ever represented and with some £1.5 billion, the highest damages ever sought for any collective trial to be heard before the CAT. Currently, worldwide regulatory investigations and proceedings run against Apple for similar conduct in the US, Europe, Australia, South Korea and elsewhere. The UK Competition and Markets Authority intervened.
  • Continuing to progress the group litigation against Mercedes-Benz in in the UK on behalf of individual and business purchasers of diesel Mercedes vehicles installed with illegal ‘defeat devices’ which altered the apparent emissions of their vehicles. Hundreds of thousands of vehicles are affected and the harmful impact of air pollution involves each of us. Together, there are more than a million claims against multiple car manufacturers, the largest group action before the English courts leading to unprecedented joint group litigation management. We act with other claimant firms as part of the GLO Steering Committee. The second issue trial dealing with whether the vehicles contained illegal defeat devices will take place in October 2025.
  • Continuing to act in the first ever consolidation of two competing UK opt-out collective actions on behalf of hundreds of thousands of UK publishers of websites and apps against Google for alleged anti-competitive practices in the online display advertising market, estimated to be worth £13.6 billion. The case set a groundbreaking precedent when our client agreed to combine the claim with a competing CPO application and the CAT ordered the consolidation of the claims which were certified in May 2024. We are now co-Counsel to the Ad Tech Collective Action LLP with members Charles Arthur, Claudio Pollack, and Kate Wellington. The claim is progressing swiftly, with a substantive CAT trial due to start in October 2025.

KP Law

KP Law‘s practice specialises in high-value group litigation cases, representing a range of clients in cases spanning consumer protection, mass torts, and product liability. The team regularly advises on claims linked to data breaches, as well as high-profile equal pay matters. The team is headed by Andrew Nugent Smith, who acts on many of the firm’s leading mandates, notably including the high-profile Dieselgate cases. Nugent Smith is skilled at handling matters in the automotive and retail sectors, with Hannah Wright Jones also knowledgeable in these areas. Kingsley Hayes focuses on data privacy and consumer claims, while Tom Longstaff is recognised for his product liability work. Emma Birch handles many of the equal pay disputes of the practice. Carter Young and Lesley-Ann Ainsworth are also noted.

Responsables de la pratique:

Andrew Nugent Smith


Autres avocats clés:

Hannah Wright Jones; Kingsley Hayes; Tom Longstaff; Emma Birch; Carter Young; Lesley-Ann Ainsworth


Principaux clients

3M Military Hearing Loss claimants


Arnold Clark data breach claimants


Asda workers’ rights claimants


Capita claimants


EasyJet data breach claimants


Equiniti data breach claimants


Harrods historic sexual abuse clients


JLR emissions claimants


Johnson & Johnson Talc claimants


Mercedes-Benz (Daimler AG) emissions claimants


Plevin/PPI claimants


Police Federation of England and Wales claimants


Renault/Nissan emissions claimants


Sainsbury’s workers’ rights claimants


Vauxhall emissions claimants


Principaux dossiers


  • Acting for around 4,000 claimants in the UK’s largest pharmaceutical group action against Johnson & Johnson, seeking damages of up to £5 billion linked to asbestos-contaminated talcum powder
  • Acting for over 50,000 Mercedes-Benz drivers in group litigation against Daimler AG, valued at £1 billion and anticipated to be the UK’s largest diesel emissions case.
  • Acting for around 30,000 Tesco employees in an equal pay claim, potentially worth around £500 million, forming part of wider litigation that could cost Tesco £4 billion.

Leigh Day

Leigh Day‘s group action practice is skilled at handling ‘market-defining cases involving environmental actions, human rights, product liability and employment’, acting on many of the leading cases in these areas. The practice is particularly noted for its ‘longstanding knowledge and experience of human rights abuses’ cases, with team heads Jamie Beagent and Gene Matthews especially knowledgeable in this area. Complex employment class actions are another strength of the team, with Nigel MacKay and Emma Satyamurti both specialists in the area. Fellow co-heads Richard Meeran and Sapna Malik are noted for their focus on international litigation. ‘Exceptional practitioner’ Martyn Day‘s impact on class actions work is praised by clients as ‘longstanding and profound’, while Oliver Holland is an ‘incredible strategic thinker’.

Responsables de la pratique:

Jamie Beagent; Gene Matthews; Nigel Mackay; Emma Satyamurti; Richard Meeran; Sapna Malik


Autres avocats clés:

Martyn Day; Oliver Holland; Matthew Renshaw


Les références

‘Leigh Day deals with a huge range of group litigation, always at the highest level. They handle market-defining cases involving environmental actions, human rights, product liability and employment. ’

‘Matt Renshaw and Daniel Leader lead teams dealing with, among other matters, litigation against Shell in respect of pollution in Nigeria. They are excellent in steering huge and difficult litigation and in thinking creatively about the best ways to advance their clients’ cases.’

‘Richard Meeran has experience that few can match when it comes to holding companies accountable for damage caused overseas, having been involved in so many of the leading cases. He brings that experience to bear in each of his cases.’

Principaux clients

Diesel emissions group litigation


The Ogale and Bille Communities, Nigeria v (1) Shell PLC (2) the Shell Petroleum Development Company of Nigeria ltd


Kabwe lead poisoning class action


Villagers of Fort Dauphin / Taolagnaro Communities v Rio Tinto plc


Various Claimants (residents of the Wye Valley)


Faith Chelangat Kirui & Others v Unilever Plc


Catarina Oliveira Da Silva & Others v Brazil Iron Limited and Brazil Iron Trading Limited


Dhan Kumar Limbu & Others v (1) Dyson Technology Limited (2) Dyson Limited (3) Dyson Manufacturing Sdn Bhd (‘Dyson)


The clients are a group of 49 individuals, either bereaved or seriously injured because of a rare, but potentially fatal, blood-clotting response allegedly caused by the vaccine.


Stade de France Group Claim


Next workers group equal pay claim


Supermarket equal pay claims vs Tesco, Morrisons & The Co-Op


Bolt drivers – worker status claim


McDonald’s employees – group claim relating to sexual harassment


Local authority equal pay (on behalf of GMB and Unison members)


Addison Lee drivers – worker status claim


Just Eat couriers – employment status claim


FREENOW drivers – worker status claim


Residents Newcastle-under-Lyme-v-Walleys Quarry


Principaux dossiers


  • Acted on claims for compensation against Audi, BMW, Citroen, Ford, Jaguar Land Rover, Mercedes, Nissan/Renault, Peugeot, Porsche, Seat, Skoda, Vauxhall, VW, Volvo and others brought on behalf of over 1.2 million vehicle owners, and constitute the largest ever consumer group action in the UK.
  • Instructed by the Ogale and Bille Communities in the Niger Delta to bring civil claims against Shell plc and its Nigerian subsidiary, SPDC.
  • Acted on the first national group equal pay claim to succeed under the equality Act 2010, having received a successful Tribunal judgment in August 2024. The Tribunal upheld the equal pay claims of the more than 3,500 claimants. The Tribunal ruled that paying the predominantly female store staff less than the male warehouse staff when their jobs were equal was indirect sex discrimination that could not be objectively justified.

Milberg London

The ‘very knowledgeable and hardworking team’ at Milberg London has ‘quickly distinguished itself as a dynamic and highly capable force in the group litigation space’, with expertise spanning product liability, financial markets, private equity, and complex shareholder issues. ‘Highly skilled litigator’ James Oldnall heads the practice, specialising in claims against leading institutional defendants and complex data protection matters. Also leading the team is Edward Cardington, who has vast technology expertise. Natasha Pearman is ‘excellent at engaging with class representatives’ and often handles matters in the pharmaceuticals, construction, and financial services sectors, areas in which Polly Blenkin is also key. Gavin Lubczanski and Hadley Zielonka are also noted.

Responsables de la pratique:

James Oldnall; Edward Cardington


Autres avocats clés:

Natasha Pearman; Polly Blenkin; Gavin Lubczanski; Hadley Zielonka; Katherine Silverleaf


Les références

‘Superb service offered by this niche firm that competes with ease with the larger law firms working in this space.’

‘James Oldnall is a highly skilled litigator with excellent commercial awareness. Natasha Pearman has excellent judgment and is a skilled strategist with superb client management skills.’

‘Milberg London has quickly distinguished itself as a dynamic and highly capable force in the group litigation space. The team brings together sharp legal minds with a strategic and forward-thinking approach to claimant work, particularly in complex and high-value collective actions. Their commitment to innovation, client care, and rigorous case preparation is evident in every matter they handle. Milberg’s ability to navigate challenging legal and procedural issues with confidence and clarity makes them a standout presence in this field. It is always a pleasure to engage with them.’

Principaux clients

Group of tens of thousands claimants v Mercedes (NOx emissions claim)


Group of tens of thousands claimants v Vauxhall (NOx emissions claim)


Group of tens of thousands claimants v BMW (NOx emissions claim)


All GLO Claimants v Mercedes and 15 Car Manufacturers (the “Pan-NOx” GLO proceedings)


Group of tens of thousands claimants v Jaguar Land Rover (engine defect claim)


Alex Neill Class Representative v Sony


Vicki Shotbolt Class Representative v Valve


Principaux dossiers


  • Advising 70,000 consumers in a claim against Mercedes for diesel emissions cheating
  • Acting on behalf of 36,000 motorists in a claim against Jaguar Land Rover for defective components in a range of popular diesel models including Range Rover and Land Rover Discovery.
  • Acting on behalf of the Class Representative, Alex Neill Class Representative Limited, Milberg commenced opt-out collective proceedings against Sony on behalf of 8.9 million UK consumers in August 2022, in relation to alleged abusive conduct concerning the distribution of digital PlayStation games and in-game content.

Pogust Goodhead

Pogust Goodhead is particularly renowned for its work on large-scale group litigation, with members of the team skilled at handling environmental, consumer, and human rights class actions. The team regularly handles novel and complex litigation, often linked to public health systems and medical devices. Practice head Tom Goodhead leads on many of the most complex disputes undertaken by the team, acting against multinational corporations. Other key figures include Jeremy Evans, who focuses on cross-border litigation, and Christopher Neill, skilled at handling product liability and data protection matters. Guy Robson and Céline Barnwell specialise in environmental litigation.

Responsables de la pratique:

Tom Goodhead


Autres avocats clés:

Jeremy Evans; Christopher Neill; Guy Robson; Céline Barnwell


Principaux clients

Municipio de Mariana and over 600,000 other individuals and businesses in Brazil as part of the Litigation against BHP (“Mariana” or “BHP”)


M. R. F. da S. & Ors v Braskem & Ors (“Braskem”)


The Municipality of Brumadinho & Ors.v TÜV SÜD AG (“Brumadinho”)


Flavio de Carvalho Pinto Viegas & Ors (“Cutrale”)


Cainquiama & Ors.v Norsk Hydro Group (“Norsk Hydro Group”)


Stichting Rio Doce – over 77,000 individuals, circa 1k businesses, 20 churches, plus 7 municipalities vs. Vale S.A. and others.


Over 45,000 individuals and businesses who owned/leased or otherwise acquired a Volkswagen, SEAT, Skoda, Audi or Porsche diesel vehicle in the Volkswagen NOx Emissions Group Litigation (No. 2)


Over 280,000 individuals and businesses who owned/leased or otherwise acquired a Mercedes-Benz diesel vehicle in the Mercedes-Benz NOx Emissions Group Litigation


Over 199,000 individuals and businesses who have purchased, leased or otherwise acquired a Vauxhall/Opel diesel vehicle, manufactured and/or supplied by Vauxhall /Opel in the  Vauxhall NOx Emissions Group Litigation


Over 179,000 individuals and businesses who have purchased, leased or otherwise acquired a Peugeot/Citroen diesel vehicle, manufactured and/or supplied by Peugeot/Citroen in the Peugeot/Citroen/DS NOx Emissions Group Litigation


Over 40,000 individuals and businesses who have purchased, leased or otherwise acquired a Fiat Chrysler and/or Suzuki diesel vehicle, manufactured and/or supplied by Fiat/Chrysler or Suzuki in the Fiat/Chrysler/Suzuki NOx Emissions Group Litigation


Over 115,000 individuals and businesses who have purchased, leased or otherwise acquired a Jaguar or Land Rover diesel No vehicle, manufactured and/or supplied by Jaguar Land Rover in the Jaguar Land Rover NOx Emissions Group Litigation


Over 210,000 individuals and businesses who have purchased, leased or otherwise acquired a Renault or Nissan diesel vehicle, manufactured and/or supplied by Renault/Nissan in the Renault/Nissan NOx Emissions Group Litigation


Over 230,000 individuals and businesses who have purchased, leased or otherwise acquired a BMW diesel vehicle, manufactured and/or supplied by BMW in the BMW NOx Emissions Group Litigation


Over 249,000 individuals and businesses who have purchased, leased or otherwise acquired a Ford diesel vehicle, manufactured and/or supplied by Ford in the Ford NOx Emissions Group Litigation


Over 40,000 individuals and businesses who have purchased leased or otherwise acquired a Volvo diesel vehicle, manufactured and/or supplied by Volvo in the Volvo NOx Emissions Group Litigation


Over 12,000 individuals and businesses who have purchased, leased or otherwise acquired a Mazda diesel vehicle, manufactured and/or supplied by Mazda in the Mazda NOx Emissions Group Litigation


Over 17,000 individuals and businesses who have purchased, leased or otherwise acquired a Toyota diesel vehicle, manufactured and/or supplied by Toyota in the Toyota NOx Emissions Group Litigation


Over 96,000 individuals and businesses who have purchased, leased or otherwise acquired a Hyundai or Kia diesel vehicle, manufactured and/or supplied by Hyundai/Kia in the Hyundai/Kia NOx Emissions Group Litigation


Principaux dossiers


  • Representing over 640,000 claimants (including municipalities, individuals, businesses, utilities, faith-based organisations and indigenous tribes) in a landmark litigation against two entities of the BHP group which at the time of writing is still dually listed in England and Australia. At the heart of this matter is the 2015 ‘Fundão Dam collapse’ in South-eastern Brazil, involving 50 million cubic metres of iron ore tailings being washed into the Doce River with massive human, environmental, and economic cost.
  • Representing more than 1,500 Brazilian orange farmers in a landmark case stemming from the Defendants’ admitted cartel conduct in the Brazilian orange market. This includes manipulating demand and artificially fixing purchase prices, which caused substantial harm to the claimants.
  • Instructed by hundreds of thousands of individuals and businesses who owned, leased or otherwise acquired diesel vehicles in their claims against almost every major car manufacturer, associated finance entities and authorised dealerships (“Pan-NOx Emissions Group Litigation”) (colloquially known as “Dieselgate”).

Stewarts Law LLP

In the eyes of one client, Stewarts Law LLP is ‘probably the most experienced claimant-side securities group claim firm’, with a range of expertise handling high-profile class actions in securities, competition, and financial product misselling. The team is particularly experienced in s90 FSMA group claims; Keith Thomas is a particular name to note in this area. Also leading the team are competition specialist Kate Pollock and David Pickstone, with extensive expertise acting for leading financial institutions. Aaron Le Marquer has considerable insurance knowledge, while Inge Forster is skilled at handling competition class actions.

Responsables de la pratique:

Kate Pollock; David Pickstone; Keith Thomas; Aaron Le Marquer


Autres avocats clés:

Inge Forster


Les références

‘Probably the most experienced claimant-side securities group claim firm. Huge numbers of experienced securities partners and associates.’

‘Keith Thomas is very experienced and relaxed. A pleasure to work with.’

‘Stewarts is one of the standout firms in the group litigation space and an obvious choice for claimants. ’

Principaux clients

Alexander Wolfson (on behalf of Microsoft business customers)


Group action v Glencore Plc (FL-2022-000025; FL-2022-000026; FL-2023-000024)


The Eclipse Litigation


Two private individuals; seven companies v SKAT


Group action v Petrofac Limited (FL-2023-000014)


ASDA Stores Limited


Liberty Retail Ltd and Arena Racing Limited


The Scotts Atlantic Group Action


London International Exhibition Centre plc (the ‘ExCeL’)


Principaux dossiers


Fox Williams LLP

Fox Williams LLP boasts an ‘extraordinary team of dedicated claimant lawyers’, with particular expertise in securities litigation. The team acts on many of the most high-profile matters in the sector, including novel ESG-related claims. Team head Andrew Hill is one of the most ‘impressive practitioners in the field of securities litigation’, and is commended for combining ‘sharp legal intellect with genuine strategic flair’. Matthew Reach is ‘very sharp and has a particularly strong grasp of quantum issues’, while Anisha Patel is a ‘great associate who cares deeply about her cases’.

Responsables de la pratique:

Andrew Hill


Autres avocats clés:

Matthew Reach; Anisha Patel


Les références

‘Andrew Hill is a highly experienced claimant-side partner. particularly good at securities litigation. ’

‘Andrew Hill and Anisha Patel have depth of experience and expertise in litigating group claims, from the technical aspects of group management to the procedural and case management techniques involved in successfully bringing group claims.’

‘Andrew Hill is a leader in the field. Anisha Patel and Vaughn Pears are up-and-coming stars. ’

Principaux dossiers


Harcus Parker Limited

Harcus Parker Limited is ‘one of the best group action firms in London’, and recognised by clients for being  ‘knowledgeable, experienced, dynamic, and full of ideas’. The team handles the gamut of consumer, data breach, and competition class actions, but is particularly skilled at handling financial services group actions. An ‘absolute pleasure to work with’, Damon Parker leads the practice that has ‘unparalleled’ knowledge of the area. Key to the ‘focused and experienced team’ are Tom Ross and Jeremy Robinson, both skilled at handling competition litigation. Edward Parkes and Daniel Kerrigan are noted.

Responsables de la pratique:

Damon Parker


Autres avocats clés:

Tom Ross; Jeremy Robinson; Edward Parkes; Daniel Kerrigan; Olivia Selley; Nate Barber; Adam Zoubir


Les références

‘Damon Parker is an absolute pleasure to work with: sensible, commercially-minded, practical and thoughtful. And a good lawyer too.’

‘One of the best group action firms in London – combine legal brilliance with great client care, which is vital when keeping a huge case on the rails.’

‘Damon Parker and Olivia Selley – both are star performers’

Principaux clients

Commercial and Interregional Card Claims I and II Limited (re: the Mastercard / Visa collective proceedings in the Competition Appeal Tribunal (“CAT”)


Credit and Debit Card Claims I and II Limited (re: the Mastercard / Visa funded collective proceedings in the CAT)


Tesco Equal Pay


Payment Protection Insurance Aggregated Claims


Mortgage Prisoner Claims: Whistletree


Mortgage Prisoner Claims: Landmark / NRAM / Topaz


The Universities Student Claim: UCL


The Universities Student Claim: Other Universities


Home REIT Shareholder Litigation


Principaux dossiers


  • Representing Commercial and Interregional Card Claims I and II Limited in collective proceedings before the CAT concerning fees charged by Mastercard and Visa.
  • Representing 14,000 current and former Tesco workers bringing claims for equal pay.
  • Representing several thousand residential mortgage borrowers in claims against lenders for being forced into mortgage with excessively high rates of interest.

Edwin Coe LLP

Edwin Coe LLP boasts a ‘wealth of experience in group actions’, with decades of experience acting on complex group claims, with expertise in follow-on cartel and consumer claims. Team head David Greene has ‘great commercial instincts’, and is skilled at handling financial claims, including competition and shareholders’ claims. Also key to the ‘ very experienced and diverse’ practice is Zahira Hussain, with expertise in professional negligence, civil fraud, and complex judicial review cases. Thomas Johnson specialises in high-value fraud cases and finance disputes. Fred Sheppard, Ian Chai, and Valerie Sweeting are also recommended.

Responsables de la pratique:

David Greene


Autres avocats clés:

Zahira Hussain; Thomas Johnson; Fred Sheppard; Ian Chai; Valerie Sweeting


Les références

‘David Greene is very experienced and extremely well regarded.’

They have a good diverse team of lawyers.’

‘David Greene is realistic and pragmatic as a lawyer. He knows how to get things done.’

Principaux clients

Claimants, including haulier Wincanton, breweries such as Adnams & Fullers, and others in the trucks cartel claim


400 Investors in the Eclipse Film Scheme


110 purchasers of Italian holiday property


400 TUI cruise customers


Investors in Finablr plc


Consumers in claims against Barclays Bank for fraud relating to timeshares


Victims of Hillsborough Disaster and cover-up


Creditors of The Interchange Organisation (now Partial Eclipse Ltd)


Amigo Loans


Pensioners receiving compensation from the Pension Protection Fund


Claimants, including haulier Wincanton, breweries such as Adnams & Fullers, and others in the trucks cartel claim


400 Investors in the Eclipse Film Scheme


110 purchasers of Italian holiday property


400 TUI cruise customers


Investors in Finablr plc


Consumers in claims against Barclays Bank for fraud relating to timeshares


Victims of Hillsborough Disaster and cover-up


Creditors of The Interchange Organisation (now Partial Eclipse Ltd)


Amigo Loans


Pensioners receiving compensation from the Pension Protection Fund


Principaux dossiers


  • Advising a group of 140 Claimants in relation to their claim for damages and interest against various truck manufacturers, following a finding by the European Commission of a price-fixing cartel. The Claimants comprise those who bought, leased or subcontracted trucks weighing six tonnes or more between 1997 and 2012. The claim is worth £100m+.
  • Acted on the Eclipse litigation where the Defendant developed, marketed and implemented the Eclipse Scheme which was sold to the Claimants as an opportunity to invest in transactions with Disney in relation to film rights. The transactions entered into by the Eclipse Partnerships with Disney were a fraud. The value of the claim is £1.3billion.
  • Handling a claim by 400 TUI customers in relation to a cancelled cruise in the Caribbean.
  • Advising a group of 140 Claimants in relation to their claim for damages and interest against various truck manufacturers, following a finding by the European Commission of a price-fixing cartel. The Claimants comprise those who bought, leased or subcontracted trucks weighing six tonnes or more between 1997 and 2012. The claim is worth £100m+.
  • Developing, marketing, and implementing the Eclipse Scheme which was sold to the Claimants as an opportunity to invest in transactions with Disney in relation to film rights. The transactions entered into by the Eclipse Partnerships with Disney were a fraud. The value of the claim is £1.3billion.

Hugh James

Hugh James is well regarded for its ‘exceptional reputation in group litigation’, with key expertise in military claims litigation, product liability matters, and human rights litigation, often with an international component. Complex industrial disease cases are another strength of the team. Practice head Neil Stockdale, praised for his 'consummate professionalism’, is skilled at handling a range of competition and consumer law claims. Stockdale heads the practice alongside Mark Harvey, who specialises in product liability claims. Stephanie Eedy and James Gibson focus on complex environmental nuisance matters.

Responsables de la pratique:

Neil Stockdale; Mark Harvey


Autres avocats clés:

Stephanie Eedy; James Gibson; Simon Ellis


Les références

‘This firm has an exceptional reputation in group litigation.’

‘Kathryn Singh and James Gibson. Both knowledgeable, tactically astute, and calm under pressure.’

‘Hugh James is vastly experienced at bringing group actions. They have brought many more group actions than any other firm. They provide an excellent client service and achieve fantastic results.’

Principaux clients

Abbott & others v Ministry of Defence


Jayne Battye & others v WR Berkley Syndicate Management Limited


Mitchell & others v Barts Health NHS Trust & others – QB-2022-002005 – Calea group action


Andrews & Others –v- Kronospan Limited (The Chirk Nuisance Group Litigation)


Armstrong & others v Department for Business, Energy and Industrial Strategy – – group action claim relating to the “Homefire” smokeless fuel plant previously owned and operated by British Coal and Coal Products Limited


Aymes & Others v Stockport Metropolitan Borough Council


Phoenix & Others –v- Walleys Quarry Limited


Principaux dossiers


  • Acting for over 7000 and serving members of the armed forces in relation to claims for noise induced hearing loss. Securing landmark ‘Matrix’ agreement in July 2024.
  • Acting on behalf of clients in group claim relating to of parenteral nutrition bags.
  • Acting for multiple clients in a group action professional negligence claim against SSB Law primarily concerning their widely publicised mishandling of cavity wall insulation claims.

Irwin Mitchell

Irwin Mitchell boasts a ‘star team of claimant product liability lawyers’, with a particularly strong practice spanning defective products, environmental issues, and medical negligence. The team is particularly skilled at handling international disputes. Team head Demetrius Danas is ‘capable of handling the most complex group actions’, and specialises in complex personal injury cases. Danas also handles high-value aviation and maritime claims.

Responsables de la pratique:

Demetrius Danas


Les références

‘A preeminent force in the country in personal injury work, capable of handling the most complex group actions, with superb resources and talent across all levels of seniority. ’

‘Irwin Mitchell is frequently instructed in group claims and has accrued a huge amount of experience in them over the years. They have a team of practitioners well-versed in the unique challenges these claims bring.’

‘A star team of claimant product liability lawyers. Great success in the mesh litigation, which was extremely hard fought. The settlement is evidence of the team’s stellar hard work and commitment over the last decade. ’

Principaux clients

TUI UK Ltd v Griffiths


Boeing 737 claims


Trans-Vaginal Mesh Litigation


Zimmer Biomet NexGen knee implants


Military Noise Induced Hearing Loss Litigation


Royal Papworth water contamination


Trafigura – Ivory Coast pollution


British Steel Coke Oven Workers Litigation


Dana Air Flight 0992


Claims arising from treatment received from Mr Williamson


Claim arising from treatment received from Mr Jabbar


Thirlwall Inquiry


 


Principaux dossiers


  • Successfully appealed a Court of Appeal decision in TUI UK Ltd v Griffiths to establish the client had not received a fair trial.
  • Acted on a successful appeal and dismissal of cross appeal in Anibaba v Dana Airlines.

Mishcon de Reya LLP

The practice at Mishcon de Reya LLP  is commended for its ‘unique offering of innovation and agility in the group litigation space’, and is also noted for having ‘real expertise in the field of group actions; particularly competition claims and data breach claims’. Richard Leedham, ‘one of the most experienced and commercially astute group litigators’, leads the practice with competition litigation specialist Sarah Houghton. Ben Lasserson is key to the practice, along with Shazia Yamin who is ‘highly able and very effective at winning cases’. Other key names to note include Pedro Martins, Tomas Mousinho, and Alexander Rhodes.

Responsables de la pratique:

Richard Leedham; Sarah Houghton


Autres avocats clés:

Ben Lasserson; Shazia Yamin; Pedro Martins; Tomas Mousinho; Alexander Rhodes


Les références

‘A unique offering of innovation and agility in the group litigation space- but combined with rock solid professionalism and core values.’

‘Richard Leedham – inspirational leadership qualities. Tom Roberts – fiercely intelligence and client communication. Pedro Martins and Tomas Mousinho bring another dimension with their South American credentials and innovative case management.’

‘Richard Leedham is an outstanding partner with a sure touch and sound judgment. Ralph Fearnhead is excellent.’

Principaux clients

Various investors in the shares of Indivior plc and Reckitt Benckiser Group plc


Justin Le Patourel


Sainsbury’s Supermarkets Ltd, Asda, Curry’s, Iceland, The John Lewis Partnership (including Waitrose Limited), Wilko Limited (in administration)


Andrew Prismall


Burger and Lobster Restaurant Group Limited, Newcastle Rugby Limited, and 39 others


(1) Claimant group comprising c.13,000 licensed black cab drivers; and (2) Justin Peters as assignee for Kabbee Exchange Ltd and Iride London Ltd


Various institutional investors in the shares of Drax Group Plc


Cleaner Bentham


University of Oxford (representing 36 Oxford colleges)


Principaux dossiers


  • Acting for over 300 investors in the shares of Indivior plc and Reckitt Benckiser Group plc in a s.90/90A FSMA claim against the two companies for losses caused by alleged misconduct in relation to the marketing in the US of a drug known as Suboxone. Matter value is in the hundreds of millions GBP.
  • Acting for Justin Le Patourel, the class representative in the lead collective proceedings in the Competition Appeal Tribunal against BT for alleged abuse of its dominant position in the market for landline services. This was the first collective proceeding to reach trial in the UK. Matter value is in the region of £1.3 billion.
  • Acting for (1) over 13,000 licensed black cab drivers and (2) Justin Peters, as assignee for Kabbee Exchange Ltd (a licensed minicab price comparison and booking service provider) and Iride London Ltd (the third largest licenced private hire cab company in London in 2015), in claims against Uber for losses sustained as a result of Uber’s unlawful activities in the London market. Matter value c.£340 million.

Stephenson Harwood

Stephenson Harwood boasts a ‘highly competent team of competition specialists’, with expertise in handling leading group claims, particularly competition and securities-related. ‘Formidable practitioner’ Genevieve Quierin, who heads the team, is regarded as ‘one of the standout figures in claimant-side group litigation’. Trudy Feaster-Gee ‘combines technical excellence with a sharp client focus’, while Tim Knight is skilled in s. 90 and s. 90A FSMA cases.

Responsables de la pratique:

Genevieve Quierin


Autres avocats clés:

Trudy Feaster-Gee; Tim Knight


Les références

‘Genevieve Quierin is a first-class litigator and one of the standout figures in claimant-side group litigation. She brings exceptional strategic judgment, deep legal expertise and a meticulous approach to complex, high-value disputes. Genevieve is particularly skilled at managing the many moving parts of large group actions, ensuring clients, funders and counsel are fully aligned throughout. Her clear, practical advice and proactive communication style make her both highly effective and deeply trusted by clients and colleagues alike. She is, without question, a leading force in this field.’

‘A highly competent team of competition specialists with a vast array of experience and a track record of securing excellent outcomes for their clients. Always on top of the detail and adept at managing teams that provide the coverage, but nimble enough to respond to changes in events.’

‘Genevieve Querin and Donna Newman are two outstanding partners who get on exceptionally well with clients and are brilliant at managing the team. Adam Polonsky and Trudy Feaster-Gea are also highly experienced in the competition field, having been heavily involved in securing successful outcomes for their clients against Visa and Mastercard. Chris Pettett and Marcus Watkinson are two excellent senior associates.’

Principaux clients

Marks and Spencer PLC


bet365


Intercontinental Hotel Group


Asda Stores Limited


Iceland Foods Limited


Aldi Stores Ltd


Wm Morrison Supermarkets Limited


Ocado Retail Limited


Co-operative Group Limited


Kew Green Hotels Ltd


WorldRemit Ltd


Sony


Wagamama


Levi Strauss & Co Europe SCA/Comm. VA


Henderson & Jones Limited


Foot Locker Netherlands B.V.


Principaux dossiers


  • Representing over 1,800 corporate claimants in group claims brought against Mastercard and Visa, totalling approximately £1.5bn. Clients include WorldRemit, Henderson & Jones, Lebara Mobile, 3, Bet365, IHG and numerous global hotel chains, high street and online retailers, restaurant chains, travel companies, arts and entertainment companies, airlines, ticketing companies and others.
  • Acting for seven UK supermarket groups that account for 45% of the UK grocery market (Asda, Aldi, Co-op, Iceland, M&S, Morrisons and Ocado), in their claims for damages against seven leading farmed Atlantic salmon producers.
  • Representing Hillside (Shared Services) Limited and others (whose claims were issued in 2017) in interchange reimbursement claims against Visa and MasterCard in two separate sets of proceedings.

Fladgate LLP

Working closely with book building specialists and litigation funders, Fladgate LLP‘s group litigation practice has an ‘impressive track record across a wide range of group litigation, spanning a wide range of sectors and legal issues’. A range of high-net-worth individuals, corporates, and SMEs, spanning a wide range of sectors, turn to the team for its expertise. The practice is headed up by the ‘tenacious and resourceful litigator’ John Evans, who is regarded by another client as ‘one of the best when it comes to group litigation’. The team of ‘excellent and commercially highly astute lawyers’ also notably includes Garbhan Shanks, Leigh Callaway, and Nadia Osborne.

Responsables de la pratique:

John Evans


Autres avocats clés:

Garbhan Shanks; Leigh Callaway; Nadia Osborne; Steven Mash


Les références

‘John Evans is a tenacious and resourceful litigator. A safe pair of hands in any group action. Steve Mash is absolutely incredible. A top-class litigator with brilliant legal insights and strategic thinking.’

‘The team is very well led by John Evans and as a team has real depth of experience. They are also one of the fastest-growing teams in the firm and indeed in London, as it goes from strength to strength. We have seen an increase in the number of enquiries we are seeing from this team and can clearly see they are now competing with some of the leading firms in group litigation.’

‘I have always been impressed with John Evans; he is one of the few lawyers who can see the wider commercial reality of group litigation rather than simply focus on the law. That makes him and his team attractive to litigation funders who want to work with him and support his cases.’

Principaux clients

SearchFlow Ltd. & Ors


A group of 905 claimants in High Court proceedings against Clydesdale Bank and National Australia Bank


RGL Management Ltd


Principaux dossiers


  • Represented over 100 English and Welsh personal search companies in a complex group litigation claim before the High Court to recover payments made to the ten water and sewerage utility companies in England and Wales for access to and/or the provision of copies of environmental information held by the Defendants.
  • Acting for a group of over 900 SME claimants in High Court proceedings against Clydesdale Bank and National Australia Bank alleging Deceit, Misrepresentation, Negligent Misstatement, Breach of Contract and Unjust Enrichment.
  • Instructed in a group action representing claimants (most likely by way of a GLO) seeking restitution for secret commissions paid by energy companies to the independent power brokers instructed by businesses to find the best electricity and gas prices.

Humphries Kerstetter LLP

Humphries Kerstetter LLP boasts a class action team praised for being 'highly experienced and adept at heavy commercial litigation’, notably in class actions linked to fraudulent investment schemes, PPI, and stock drop claims. An ‘absolutely top-notch litigator’, practice head Toby Starr is noted for his expertise in financial misselling and data privacy matters. Harriet Bush is noted for her capability in company and shareholder disputes.

Responsables de la pratique:

Toby Starr


Autres avocats clés:

Harriet Bush; Kieran Anderson


Les références

‘Attention to detail, thoughtful analysis, responsiveness and general, all round geniality. Top quality work product done in a timely manner and with good grace.’

‘Toby Starr: an absolutely top-notch litigator who knows exactly what he is doing and gets it done. A complete pleasure to work with. I cannot recommend him too highly. Harriet Bush: thoughtful, careful, fantastic with detail and very responsive to queries and suggestions. A rising star.’

‘A highly competent, specialist competition firm.’

Principaux clients

Ad tech Collective Action LLP, proposed class representative for 130,000 UK publishers of websites and mobile apps against Google.


Series 1 bondholders of Blackmore Bond plc


Principaux dossiers


  • Acted for Ad tech Collective Action LLP, class representative for approximately 130,000 UK online publishers (websites and apps) and associated partners against Google.
  • Acting for a group of bondholders to investigate and pursue claims on their behalf arising out of the collapse of Blackmore Bond Plc.

Penningtons Manches Cooper LLP

A ‘stalwart of professional negligence group litigation’ David Niven leads the ‘extremely experienced’ group action practice at Penningtons Manches Cooper LLP. Niven leads the practice alongside Kamran Rehman and David O’Brien , who is regarded by one client as ‘one of the best litigators in the City, with a wealth of knowledge and commercial awareness’. The team is particularly known for its experience acting on claims related to insurance, financial mis-selling, and professional negligence. Michael Brown and Charlotte Hill are also recommended.

Responsables de la pratique:

Kamran Rehman; David Niven; David O’Brien


Autres avocats clés:

Michael Brown; Charlotte Hill


Les références

‘One of the leading group litigation practices in the City: efficient, tireless, and getting great results. David O’Brien scored a momentous win for 90+ clients in a £20 million arbitration against insurers in 2024-2025.’

‘David Niven: a huge figure in the group litigation market; astute at the legal analysis, the practical complexities, and on top of his game in every way. David O’Brien: one of the best litigators in the City with a wealth of knowledge and commercial awareness; a thoroughly good bloke to boot. Regularly wipes the floor with opposition of the highest calibre. Richard Raban-Williams: forensic, superb instincts; works hard and achieves great results.’

‘Extremely experienced team, with depth of knowledge and know-how. The solicitors have a keen eye for detail and preparation, but also know when to give difficult advice. A real pleasure to work with, with correspondence and papers meticulously prepared. ’

Principaux clients

Various claimants (134) with claims against Williams & Co


Various NFUM Policyholders


Podhurst Orseck PA (on behalf of 43 individuals)


Various Business Interruption Insurance Policyholders


Various Investors in the Sky Building


Claims re: Credit Immobilier de France and Center Parcs France


Principaux dossiers


  • Successfully defended an application in the High Court by Williams & Co to strike out the group claims as an abuse of process on the basis that they were brought using one claim form.
  • Commenced group action commercial court proceedings against NFU Mutual on behalf of a group of some 90 policyholders in relation to unpaid Covid-19 business interruption claims.
  • Acting for a group of 30+ individuals in a complex, multijurisdictional dispute with a foreign lender.