A&O Shearman offers a globally integrated oil and gas practice, advising throughout the full asset lifecycle from consenting and planning through to construction, financing, operation, refinancing and sale. For its client base of NOCs, IOCs, independent oil and gas companies, and funders, the firm stands out for its strategic support on greenfield developments, capital recycling, and high-profile M&A and refinancing transactions. John Geraghty specialises in international M&A, cross-border joint ventures, project development and long-term commodity sales agreements in the energy and natural resources sector. Troy Edwards, co-head of the energy sector group and head of the construction practice, advises on complex, large-scale developments across oil and gas, hydrogen, and CCUS, with particular expertise in structuring first-of-a-kind infrastructure and energy transition projects worldwide. Further key contacts include project finance expert Lorraine Bayliss and commercial specialists Alexander Chenery and Oliver Bacon.

Ashurst‘s dedicated oil and gas team combines international reach with in-depth local market knowledge. The team supports clients across every stage of the oil and gas value chain—from exploration and production to transport and refinement —while also advising on the evolving energy transition. Its expertise spans M&A, joint ventures, finance, project development, regulatory matters, disputes, and international public law. Michael Burns leads the firm’s energy and infrastructure M&A practice in EMEA and advises on transactions across conventional energy and energy transition sectors, including hydrogen and CCUS. Julia Derrick specialises in M&A, project development, and commercial contracts, with a strong focus on upstream oil and gas, LNG, and hydrogen assets. Quentin Robinson advises across the full lifecycle of energy and resources projects, particularly in upstream oil and gas, energy transition, and mining. Naomi Nguyen focuses on M&A and commercial contracts, especially in upstream energy transactions.

Clifford Chance LLP advises a broad client base across the oil and gas sector, including oil majors, financial institutions and independents, offering expertise across corporate, finance and disputes work. Particularly well-versed in cross-border transactions, joint ventures and strategic advisory, the team advises clients on matters concerning conventional and alternative energy assets. Steven Fox, who co-heads the team, specialises in corporate and finance transactions across the upstream oil and gas sector and energy transition, advising on M&A, joint ventures and acquisitions and disposals globally and on the UK Continental Shelf. Alex Panayides, also co-leading the practice, advises multinationals and private equity clients on complex, cross-border matters. Craig Nethercott brings deep project finance experience across Europe, the Middle East, Africa and Asia. Russell Wells, who serves as global co-head of energy, advises on major transactions and client strategy worldwide.

Herbert Smith Freehills Kramer LLP‘s energy practice demonstrates deep expertise across corporate, finance and disputes work in the oil and gas sector. With a strong bench of specialists and a reputation for handling complex, multi-jurisdictional transactions, the team advises across the full energy value chain. Complementing its deep capacity in energy sector disputes, the firm is recognised for its leading M&A and project finance capabilities, particularly in upstream financing, acting for lenders, borrowers and sponsors. Lewis McDonald advises on global energy projects spanning upstream oil and gas, LNG and renewables. Reza Dadbakhsh is a key individual on cross-border transactions. Steven Dalton advises E&P majors, utilities and traders on M&A and project development across hydrocarbons and the energy transition, with experience in both major and emerging markets. James Baily is a further key contact.

Latham & Watkins advises across the full oil and gas value chain, with strong capabilities in project finance and development, M&A, and capital markets mandates. Alongside a growing expertise in decarbonisation initiatives including renewable fuels and carbon capture and storage, the firm is well-versed in complex, cross-border matters concerning exploration and production, asset- and company-level transactions, and environmental issues. Simon Tysoe advises on a broad range of cross-border matters impacting upstream, midstream and downstream oil and gas, including M&A, restructuring, joint ventures and project development. Samuel Newhouse, vice co-chair of the firm’s M&A practice, focuses on high-value public and private acquisitions, disposals, and joint ventures within the oil and gas sector. Evelyne Girio advises on complex project development and M&A across the energy and natural resources space.

Linklaters LLP  offers a fully integrated, cross-practice oil and gas team with deep expertise across M&A, joint ventures, commercial contracts and financing, advising throughout the entire sector value chain. As a core area of focus, the firm regularly acts on complex, multi-jurisdictional and high-profile transactions across the upstream, midstream and downstream markets. Daniel Tyrer, who heads the firm's global energy and infrastructure practice, advises on upstream oil and gas, LNG, pipelines and petrochemical project development and financing. Mark Russell focuses on hydrocarbons, LNG, refining and CCUS sector issues, with expertise in project development, M&A, trading and joint ventures. Andrew Penfold leads the major projects construction practice and advises on large-scale oil and gas, power and infrastructure developments. Jack Allen-Fitt advises on transactions across the oil, gas and petrochemicals chain, with experience in project structuring, financing, M&A and trading.

Norton Rose Fulbright advises a diverse range of clients across the global energy sector – including oil majors, national oil companies, financial institutions, developers, governments and multilateral organisations – on projects, regulatory, transactional, and disputes mandates. Energy transition finance expert Rob Marsh leads the practice. Hussain Kubba is a corporate energy specialist who advises on UK and international upstream oil and gas matters, including acquisitions, disposals, farm-ins, joint ventures and commercial agreements. Holly Stebbing focuses on litigation and dispute resolution across the energy and natural resources sectors, with particular expertise in energy transition and climate-related contentious mandates. India Furse brings significant experience in cross-border energy and natural resources disputes.

Baker Botts (UK) LLP  advises a global client base on complex oil and gas matters, with particular strength in the LNG sector. The team supports clients on high-value mandates across upstream, midstream and downstream operations, spanning M&A, joint ventures, project development, financing and disputes, ensuring comprehensive support across the full lifecycle of energy assets. The firm also plays a leading role in the energy transition, guiding clients through emerging technologies such as hydrogen and CCUS. Alex Kerr specialises in energy project development and commodity trading, with a focus on LNG, hydrogen and cross-border pipeline developments. Mark Rowley is a further key contact on global matters, with expertise in upstream developments, cross-border pipelines and major infrastructure projects across the oil and gas sector. Alistair Wishart joined the firm.

Bracewell (UK) LLP advises major oil and gas companies on a wide range of matters, with particular strength in projects and disputes mandates concerning exploration and production, infrastructure assets, and downstream operations. Jason Fox, head of the international practice, is an experienced energy finance specialist focused on upstream oil and gas transactions. John Gilbert handles litigation, arbitration, and mediation, particularly involving exploration and production, pipeline construction, and downstream operations. Ben James advises on the development, sale, and financing of oil and gas assets, with a focus on E&P transactions in developing markets. Adam Blythe supports clients across the upstream, midstream, and downstream sectors on M&A, project development, and commercial arrangements.

Dentons’ oil and gas team advises clients across the full value chain, with recognised strength in both domestic and international markets. The team supports NOCs, oil majors, trading houses, financiers and new entrants on high-value transactions, with particular focus on upstream M&A, LNG and refining. It is also active in the energy transition, advising on carbon capture, hydrogen and low-carbon fuels. Charles Wood specialises in LNG and gas sales, market reform and energy regulation. Humphrey Douglas advises on international acquisitions, disposals, joint ventures and regulatory matters, with experience across oil, gas and low-carbon energy. Mark Cheney is noted for his work on complex structured trading and financing transactions in the refining and power sectors, acting for major global clients.

King & Spalding LLP  has a broad oil and gas practice spanning upstream, midstream, downstream and alternative fuels in major and emerging markets. The team regularly advises on M&A, project financing and complex disputes, making it a go-to adviser for clients across the energy sector. Tom Sprange KC provides strategic counsel and advocacy in high-value oil and gas sector disputes, representing corporates, sovereign states and financial institutions. Ruth Byrne KC brings a specialism in international commercial and investment arbitration to energy sector cases. Energy industry team head Dan Feldman offers notable projects and M&A expertise and Kelly Malone is an expert in development, finance, and construction mandates, particularly concerning conventional power projects.

Pinsent Masons LLP is highly sought-after for its M&A expertise in the oil and gas sector, advising on a range of domestic and cross-border corporate transactions. The firm supports clients across the full asset lifecycle, offering commercially focused advice on high-value transactions. Rosalie Chadwick, head of the oil and gas team, specialises in M&A and corporate finance, advising on both UK and international deals. Bringing extensive experience within the sector, Jonathan Woolf focuses on cross-border M&A and joint ventures. Akshai Fofaria bolsters the firm’s presence in transactional mandates through offering further knowhow in M&A processes.

Standing out for its ‘commercial understanding’, Slaughter and May advises on a range of oil and gas sector mandates, with notable experience in financing, project development, and M&A across the hydrocarbon value chain. Hywel Davies, co-head of the infrastructure and energy group, advises on M&A, joint ventures, and corporate restructuring within the sector. Michael Corbett also co-leads the team, contributing longstanding experience regarding energy and power M&A and joint ventures. Oly Moir boasts ‘unrivalled knowledge’ of energy and infrastructure projects, advising on upstream and midstream M&A, hydrogen infrastructure development, and carbon capture and storage projects. The practice combines legal expertise with in-depth industry knowledge to deliver practical solutions across the energy sector.

Vinson & Elkins RLLP advises domestic and international clients across the oil and gas sector on complex M&A, financing, disputes, and a wide range of contractual, commercial, and regulatory matters. Ben Higson advises on mergers and acquisitions, joint ventures, and strategic commercial arrangements, with a focus on energy, infrastructure, and natural resources. Nadine Amr has a strong track record in energy sector M&A, with recent engagements including big-ticket divestments for multinational corporates. Alex Msimang, who , who has extensive experience advising on oil and gas projects and transactions, working with a broad client-base of developers, lenders, governments, and corporates. Lauren Davies, an expert in oil and gas project finance, stands out for her ‘strategic thinking and leadership’. Andrew Nealon is a further key contact.

Akin advises across the full oil and gas value chain, including upstream, midstream, downstream, LNG, refining, and petrochemical operations. The firm is experienced in joint ventures, corporate transactions, financial restructuring, private credit, project finance, and international disputes, while also assisting clients through trade, sanctions, and public policy issues. Building off his longstanding oil and gas experience, Alex Harrison supports clients with hydrocarbon-based businesses in the transition of their operations. Shaun Lascelles focuses on complex corporate and private equity deals. Rob Butler advises on energy and infrastructure projects, with a specialism in the upstream and midstream oil and gas space. Justin Williams is a further key contact.

Baker McKenzie assists across the full hydrocarbon value chain, with strong capabilities in M&A and LNG project advisory. The firm supports clients on complex transactions and commercial arrangements throughout the energy sector, focusing particularly on the upstream and downstream markets. An upstream transaction specialist, Richard Blunt leads the corporate energy team and the global energy and infrastructure practice. Philip Thomson specialises in transactions across the energy and infrastructure space, with particular expertise in the project development and financing of midstream, downstream, and energy transition assets. Thomson also advises on joint ventures, M&A, and restructuring within the sector.

Bryan Cave Leighton Paisner advises on all aspects of upstream, midstream, and downstream oil and gas operations, including exploration and production, infrastructure development, licensing, service agreements, and sales contracts. Adam Dann advises on a broad range of commercial and corporate matters, including M&A, asset exchanges, joint ventures, financings, and sector-specific agreements such as processing and transport deals. Kevin Atkins brings deep experience in corporate and financing transactions, assisting on acquisitions, joint ventures, project finance, and capital raising in both traditional and transitional energy markets. Helen Miller focuses on M&A, joint ventures, and complex contracts across oil and gas and energy transition technologies, demonstrating significant cross-border experience.

Fieldfisher’s oil and gas team brings strength in corporate transactions, project finance, and high-value international disputes. Complementing its expertise with conventional assets from exploration through to decommissioning, the team is also active across the energy transition, demonstrating familiarity with carbon capture and storage and hydrogen projects. Anna Crosby, co-head of the oil & gas group, specialises in debt finance matters. Richard Waugh, also co-leading the practice, focuses on major commercial disputes, including international gas pricing cases. Simon Sloane provides further strength to the group with his expertise in oil and gas litigation.

Mayer Brown International LLP advises on the full spectrum of oil and gas matters, including cross-border M&A, financing, project development, sales arrangements, disputes, and regulatory issues. The firm is known for its ability to provide end-to-end support to major players in the global energy market. Bob Palmer focuses on upstream and midstream M&A and projects, as well as sector-related disputes and arbitrations. Owing to his deep experience in complex oil and gas transactions, particularly in southeast Asia, Richard Nelson bolsters the team’s international capacity. Mark Stefanini contributes additional disputes knowhow.

Simmons & Simmons advises on complex, cross-border oil and gas mandates, with a strong focus on transactions, project development, financing, and regulatory work. The team is well-versed in guiding clients through major projects, financings, and commercial and supply agreements in Europe, Africa, and Asia, among other markets. Iain Duncan heads the practice, overseeing strategic mandates across the sector. Patrick Wallace regularly advises governments, investors, and energy companies on joint ventures, M&A, LNG and pipeline developments, and project agreements. Owing to his 'huge experience', Andrew Petry is a key contact on project finance mandates, while Joanne Elson brings additional project development and finance knowhow.

Watson Farley & Williams LLP demonstrates a leading oil and gas practice, advising on major M&A, finance, and litigation matters across the UK and global markets. The firm is highly sought-after for its work on landmark transactions, including high-value acquisitions from oil majors, and for its strong relationships with major lenders and traders. Chris Kilburn, global head of oil and gas, focuses on complex upstream M&A involving significant asset transfers. Joe Levin is recognised for his expertise in reserve-based lending financings. Heike Trischmann leads the firm’s LNG-to-power offering.

Addleshaw Goddard advises on a broad range of international oil and gas matters, with notable experience across African, Asian, and European markets. The firm is active in M&A, disputes, and LNG contracts, and is elsewhere sought-after for its growing expertise in hydrogen, carbon capture, and energy transition projects. Heading the oil and gas sector group, Angus Rollo focuses on M&A mandates. Paul Jones advises across the full energy value chain, with a focus on upstream oil and gas, LNG, and low-carbon developments.

Alongside a strong focus on complex cross-border disputes and international arbitration, the oil and gas team at Clyde & Co handles non-contentious work across upstream, midstream, and downstream projects. David Bennett is a leading disputes specialist known for his work with major global industry players. Anna Nerush advises on cross-border investments and project development, with a focus on offshore gas assets within emerging markets. David Leckie and Tom Roberts stand out on arbitration mandates.

Curtis, Mallet-Prevost, Colt & Mosle LLP is notable for its long-standing representation of governments, national oil companies, and regulators in the oil and gas sector. The firm advises on licensing rounds, model documentation, and increasingly supports energy transition initiatives, including hydrogen projects. Marc Hammerson focuses on M&A, project development, and restructuring in the oil and gas industry. Odysseas Stergianopoulos specialises in international arbitration and litigation, frequently representing sovereign states and state-owned entities in energy-related disputes.

Eversheds Sutherland (International) LLP advises across the entire oil and gas value chain and energy transition landscape, assisting clients through exploration and production, project development, and commercialisation. Jubilee Easo advises on cross-border transactions, joint ventures, and long-term offtake agreements involving LNG, hydrogen, and ammonia. Alex Cook specialises in international arbitration and oil and gas disputes, including price reviews of long-term gas supply contracts, and represents both commercial clients and state entities in high-value, multi-jurisdictional cases.

Gibson, Dunn & Crutcher advises across the energy value chain, with recognised expertise in the oil and gas and energy transition markets.Key contacts include the ‘very thorough and strategic’ Trinh Chubbock.

Haynes and Boone CDG, LLP advises across the full oil and gas value chain, assisting on exploration and production matters, infrastructure development, licensing, service contracts, and M&A. Glenn Kangisser focuses on exploration and transportation issues within the offshore oil and gas sector, advising on transactional, regulatory, and dispute mandates. Teena Grewal advises on complex offshore contracts and FPSO projects across multiple jurisdictions.

HFW boasts a broad oil and gas practice with particular strength regarding LNG, FPSO, and FSRU projects. The team is highly experienced in structuring and negotiating LNG contracts, joint ventures, and operational agreements, though brings additional expertise in asset decommissioning, energy transition projects and initiatives, and sanctions advisory. Acclaimed for his ‘commercial and sensible’ advice, Alistair Mackie specialises in infrastructure and commercial energy work, with a focus on LNG, FPSO and FSRU assets. Jonathan Bruce advises on major insurance and reinsurance disputes in the energy sector, including high-profile claims involving offshore losses.

Hunton Andrews Kurth LLP has a strong reputation in the oil and gas sector, advising on complex transactions, project development matters, financings, and disputes. Notable for its global reach, the team is particularly experienced in advising NOCs, IOCs, lenders, and traders on strategic matters. The practice builds off the strength of its three co-heads: Charles Morrison brings significant experience in finance and projects mandates; Jason Parker is known for project finance in technically complex energy developments; and Maurice Kenton adds strength in arbitration and transnational litigation. Rounding off the team, Dimitri Papaefstratiou advises on energy and infrastructure projects, with a particular focus on oil and gas, hydrogen, and low-carbon energy assets in emerging markets.

K&L Gates LLP‘s oil and gas team advises across the upstream, midstream, and downstream sectors on M&A, project finance, and regulatory matters. Paul Tetlow focuses on corporate transactions, including joint ventures and investments in oil, gas, and natural resources assets and projects. Ben Holland specialises in LNG and gas disputes, particularly those arising from price volatility and supply issues.

Morgan, Lewis & Bockius UK LLP advises on the full lifecycle of oil and gas projects, from development and financing to acquisition and sale. The firm is highly regarded for its capacity in international project finance and for its deep, longstanding relationships with clients across the energy and natural resources sectors. Key to its strength and global reach, the team is notable for its cross-office expertise on major transactions and infrastructure developments. Olivier Chambord and Allison Soilihi focus on corporate transactions in the oil and gas, petrochemical, and mining sectors, regularly advising on upstream acquisitions, disposals, joint ventures, and a wide range of commercial and operational agreements. Ayesha Waheed and Seyfi Can Kandemir left the firm.

Quinn Emanuel Urquhart & Sullivan, LLP is known for its strength in contentious energy and resources mandates, including commodity trading disputes, competition law issues, and corporate investigations. Ted Greeno specialises in oil and gas disputes, covering pricing, joint ventures, production sharing agreements, drilling, and long-term gas agreements. Melis Acuner represents corporations and governments in high-value international energy arbitrations.

Reed Smith LLP’s oil and gas team, led by Kyri Evagora, is known for its cross-border insight on commercial mandates, particularly concerning hydrocarbon production. James Atkin is known for his strong industry knowledge within the LNG space, while James Hatchard is noted for his expertise in contract agreements and the venture capital landscape. Longstanding LNG specialist Nina Howell joined the firm in April 2024.

Wikborg Rein offers comprehensive support across the oil and gas sector, with expertise spanning regulatory matters, corporate transactions, and complex litigation and international arbitration. Jonathan Goldfarb brings 'sensible, focused advice' on LNG-related mandates, while Renaud Barbier-Emery focuses on offshore project development and financing, advising drilling contractors and energy companies on high-value, cross-border deals.

Debevoise & Plimpton LLP has a strong reputation for advising on energy disputes, regulatory developments, and energy transition matters, including significant experience with Energy Charter Treaty cases. Jeffrey Sullivan KC focuses on international arbitration and public international law matters, with particular emphasis on the energy sector investment landscape. Conway Blake advises on civil litigation, commercial arbitration, and investor-state disputes, with experience across the energy and extractive sectors in Africa, the Caribbean, and the CIS region.

Hill Dickinson LLP advises upstream companies, rig and infrastructure owners, and financial institutions on a wide range of oil and gas matters. As a core area of expertise, the team offers tailored support across transactional and operational mandates in the upstream oil and gas space. Roderick Palmer has extensive experience negotiating offshore supply agreements, advising on sales, charter arrangements, and rig acquisitions. Jonathan Morris handles M&A and corporate advisory work within the sector.

Keystone Law‘s ‘extremely nimble’ team advises clients across a spectrum of oil and gas matters, demonstrating ‘deep knowledge’ of the sector. Fei Mao brings regulatory and transactional insight. Stuart Mathews is a key contact on transactional mandates in the natural resources space, Pav Samothrakis is ‘commercially minded’ and an expert on offshore energy matters, and Alexis Petrou is a commercial specialist. Richard Temple  retired from the practice.

McDermott Will & Schulte offers deep support on complex oil and gas transactions, including upstream, midstream and downstream M&A, joint ventures, project finance and infrastructure development. The team combines transactional strength with regulatory and disputes expertise. Shah Jahan Khandokar advises on a range of matters spanning oil and gas projects, while Elisabeth Moseley is recognised for her expertise on multi-jurisdictional M&A and financing deals, especially those involving African assets.

Pillsbury Winthrop Shaw Pittman LLP’s energy team is well-versed in handlings on oil and gas transactions and disputes spanning multiple regions. Greg Hammond advises on corporate finance, M&A, and joint ventures, particularly within the oil sector. Deborah Ruff leads the international arbitration group and handles high-value disputes in the LNG space, while Steven Farmer supports energy clients navigating regulatory challenges in the UK and EU.

Squire Patton Boggs offers a comprehensive oil and gas practice spanning corporate and M&A, regulatory, project finance, tax, energy trading, and dispute resolution mandates. Key lawyers include Trevor Ingle  and Peter Stewart, whose practice covers energy and infrastructure projects, technology transactions, and international arbitration. Naomi Briercliffe focuses on energy-related commercial and investment treaty arbitration and public international law matters.