Judith Aldersey-Williams has over 25 years’ experience advising on antitrust, competition and trade, and regulatory matters in the UK and now brings that experience to bear for her clients in the energy sector.

Her current main focus is the interaction of competition law and collaboration in the context of the current cost pressures faced by the industry and the new system of UK oil and gas regulation which requires the industry to collaborate to maximise economic recovery across the basin. 

With more than 450 energy and climate change lawyers, including over 100 partners, the CMS Energy and Climate Change practice is one of the largest of its kind in the world. Led from its centres of excellence such as London and Aberdeen, the practice works across 75 offices globally. Building on 40 years of experience advising on power, oil & gas and renewables through to energy disputes, emerging areas and Energy Transition, CMS is uniquely placed to ensure clients receive advice best suited to their commercial needs and to our collective future.

Judith Aldersey-Williams is Of Counsel in the CMS Energy & Climate Change Team, with over 25 years of experience in upstream oil and gas contracts and regulation. Based out of the Aberdeen office, she advises energy industry clients in the UK and internationally on their joint venture agreements, transportation agreements, gas sales agreements and procurement contracts and has worked on projects from Angola to Trinidad (she’s still hoping for a project in Zambia).  She also advises on regulatory issues and on competition/antitrust matters in the oil and gas industry. 

Her career highpoints have been advising Oil & Gas UK in its negotiations with the UK Government over the introduction of ground-breaking contracts to guarantee tax relief for decommissioning and advising the Subsea Well Response Project, a group of nine multinational oil companies, on contracts for the development and funding of innovative equipment which is now available to allow operators around the world better to respond to well control incidents like Macondo. She regularly supports Oil & Gas UK on industry initiatives.

With more than 450 energy and climate change lawyers, including over 100 partners, the CMS Energy and Climate Change practice is one of the largest of its kind in the world. Led from its centres of excellence such as London and Aberdeen, the practice works across 75 offices globally. Building on 40 years of experience advising on power, oil & gas and renewables through to energy disputes, emerging areas and Energy Transition, CMS is uniquely placed to ensure clients receive advice best suited to their commercial needs and to our collective future.