Judith Aldersey-Williams

Practice Areas

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.

Professional Memberships

Trustee of the Energy, Mineral and Natural Resources Law and Policy Education Trust.

Work Highlights

Oil & Gas UK in negotiations with HM Treasury and HMRC for introduction of decommissioning relief deeds to provide certainty over decommissioning tax relief and their implications for decommissioning security.

Shell as operator of Subsea Well Response Project, a joint venture of nine multinational oil companies, on agreements with Oil Spill Response Limited for the development of equipment to respond to well control incidents worldwide.

TAQA representing a consortium of operators ("the Operational Gas Group") on a suite of contracts for purchase of fuel gas in Northern North Sea.

Oil & Gas UK on drafting of industry standard JOA and DSA.

BP on restructuring of contracts for the Foinaven Field.

Kellas Midstream on suite of agreements for the development of the Tolmount Field.

Major on decommissioning contracting strategy for significant portfolio of assets.

Independent on integrated services agreement.

Major oil companies on the drafting of decommissioning security agreements.

Multinational on a total facilities contract.

Major independent on competition issues arising out of joint marketing or selling of hydrocarbons.

Multinational on application of decommissioning legislation to UK wells and on issues relating to derogations from OSPAR.

Services company on development of standard service agreements.

Independent on sole risk issues under JOA.

Independent on risk issues arising out of contractual indemnity arrangements.

Education