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Judith Aldersey - Williams

Partner

CMS Cameron McKenna Nabarro Olswang LLP
6 Queens Road
Aberdeen
AB15 4ZT
United Kingdom
Languages English, French
Energy & Climate Change

Judith Aldersey-Williams has 25 years' experience as a commercial lawyer in London and Aberdeen.  She advises energy industry clients in the UK and internationally on commercial contracts, including joint operating agreements, major infrastructure projects, gas sales agreements, supply and service 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 competition/antitrust matters. 

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. 

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.

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"Always good and commercial legal advice and really good support."

Legal 500, 2020

"extremely helpful and pragmatic," adding that she is "very approachable and responsive."

Chambers, 2019

"a very smart lawyer"

Chambers 2018

“Judith Aldersey-Williams is viewed by multiple interviewees as "at the forefront of complex industry legal issues," and receives particular praise for her handling of decommissioning matters. Recent highlights include assisting with exploration and production contracts, including farm-out arrangements, and mandates for service companies.”

Chambers, 2016

Judith Aldersey-Williams is viewed by multiple interviewees as "at the forefront of complex industry legal issues," and receives particular praise for her handling of decommissioning matters. Recent highlights include assisting with exploration and production contracts, including farm-out arrangements, and mandates for service companies.

Chambers UK 2015

Chambers UK 2014 says Judith “is a "strong name in the industry" and stands out for her work with Oil & Gas UK on decommissioning tax relief. Sources marvel at her intellectual prowess: "Judith is incredibly bright. For really complex problems she is the best, and has done an amazing job working on industry standards."

Chambers UK 2014

Outstanding

Legal 500, 2013

Relevant experience

  • 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 updating to reflect introduction of Bribery Act 2010.
  • Oil & Gas UK on the development of guidelines for licensees in the UKCS to demonstrate to DECC their ability to respond to a well control incident.
  • A number of major oil companies on the drafting of decommissioning security agreements.
  • BP on a suite of major procurement and fabrication contracts for developments offshore Angola.
  • 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 oilfield and on issues relating to derogations from OSPAR.
  • Apache on TPOSA, CTIA and DSA in relation to the Bacchus development.
  • CNR on suite of related transportation and gas sales agreements.
  • Mellitah Oil & Gas BV on dispute with insolvent contractor.
  • Services company on development of standard service agreements.
  • Small independent on sole risk issues under JOA.
  • Small independent on risk issues arising out of contractual indemnity arrangements.

“Judith Aldersey-Williams is viewed by multiple interviewees as "at the forefront of complex industry legal issues," and receives particular praise for her handling of decommissioning matters. Recent highlights include assisting with exploration and production contracts, including farm-out arrangements, and mandates for service companies.”

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Education

  • 1989 - Admitted as a Solicitor in England and Wales
  • 1987 - Law Society Finals, College of Law
  • 1986 - Kennedy Scholarship to Harvard Law School, LLM
  • 1985 - BA in Law, 1st class, Cambridge University, Cambridge
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Memberships

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

  • Default clauses in joint operating agreements: recent guidance from the English courts, International Energy Law Review - March 15, 2016
  • Chambers Practice Guide on Energy: Oil & Gas - UK chapter with Penelope Warne, December 2015
  • Petroleum Review – January 2014 - Decommissioning relief deeds – a world first
  • Chapter on Decommissioning Security in Decommissioning, ed Hammerson, Global Law and Business, 2nd Edition, June 2016
  • Chapter on competition law in Oil and Gas Law – Current Practice and Emerging Trends, Gordon and Paterson, 2nd Edition, Dundee University Press 2011
  • Application of the anti-deprivation rule to forfeiture in oil and gas contracts - International Energy Law Review – Issue 6 2010
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Lectures list

  • UK Oil and Gas Law Course (CEPMLP and CMS Cameron McKenna), St Andrews – Oct 2015 – Decommissioning and Decommissioning Security.
  • IBA Conference, London December 2013 – UK regulatory response to Macondo.
  • OSPRAG Summit – Aberdeen, September 2011 – Liability for Oil Spills: the UK Legal Regime.
  • Centre for American and International Law - 1st International Offshore Oil & Gas Law Conference: The Future of Offshore Exploration and Development after Macondo – December 2010, New Orleans – Implications for offshore contracting.
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Competition

Judith Aldersey-Williams has over 25 years’ experience advising on competition 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.

more less

"Always good and commercial legal advice and really good support."

Legal 500, 2020

"extremely helpful and pragmatic," adding that she is "very approachable and responsive."

Chambers, 2019

"a very smart lawyer"

Chambers 2018

Relevant experience

  • Oil & Gas UK on potential competition law implications of sharing of data regarding Petroleum Revenue Tax in the context of decommissioning security calculations.
  • Major independent on structuring a secondment arrangement of oil trading staff between joint venture parties to ensure no illegitimate sharing of commercially confidential information.
  • Oil & Gas UK on sharing of commercially confidential information in the context of the Northern North Sea Rejuvenation Project.
  • International joint venture on possible antitrust issues arising out of bundling of services in respect of new technology.
  • UK joint venture on competition issues arising out of provision of specialist services in the aviation field.
  • Independent oil company on competition issues arising out of joint marketing or selling of hydrocarbons.
  • Major independent on UK and EU competition law issues and application of the UK Infrastructure Code of Practice to transportation contract.
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Education

  • 1989 - Admitted as a Solicitor in England and Wales
  • 1987 - College of Law, Law Society Finals
  • 1986 - Kennedy Scholarship to Harvard Law School, LLM
  • 1985 - Cambridge University, BA in Law, 1st class
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Publications

  • Petroleum Review – January 2014 - Decommissioning relief deeds – a world first
  • Chapter on Decommissioning Security in Decommissioning, ed Hammerson, Global Law and Business 2013
  • Chapter on competition law in Oil and Gas Law – Current Practice and Emerging Trends, Gordon and Paterson, 2nd Edition, Dundee University Press 2011
  • Application of the anti-deprivation rule to forfeiture in oil and gas contracts - International Energy Law Review – Issue 6 2010
more less

Lectures list

  • UK Oil and Gas Law Course (CEPMLP and CMS Cameron McKenna), St Andrews – Oct 2015 – Decommissioning and Decommissioning Security
  • IBA Conference, London December 2013 – UK regulatory response to Macondo
  • OSPRAG Summit – Aberdeen, September 2011 – Liability for Oil Spills: the UK Legal Regime
  • Centre for American and International Law  - 1st International Offshore Oil & Gas Law Conference: The Future of Offshore Exploration and Development after Macondo –  December 2010, New Orleans – Implications for offshore contracting
more less

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24 April 2020
Oil and Gas Au­thor­ity Up­date April 2020
Oil & Gas Au­thor­ity Up­date April 2020 from CMS. Find out more.
07 September 2020
32nd Off­shore Li­cens­ing Round sees 113 Li­cences Awar­ded by OGA
On 3rd Septem­ber, the Oil and Gas au­thor­ity (OGA) an­nounced its of­fer for the award of 113 li­cences over 259 blocks or part-blocks to 65 com­pan­ies. Li­cences were awar­ded in the OGA’s 32nd Off­shore Li­cens­ing...
November 2019
CMS Pub­lic Pro­cure­ment Tool­box of Rem­ed­ies
Tool­box of rem­ed­ies in pub­lic award pro­ced­ures avail­able across 35 jur­is­dic­tions. Down­load here!
28 August 2020
En­ergy Trans­ition on the UKCS - two crit­ic­al re­ports pub­lished
In­tro­duc­tion Au­gust saw the pub­lic­a­tion of two doc­u­ments which will have a sig­ni­fic­ant bear­ing on de­vel­op­ments in the oil and gas in­dustry in the next dec­ade, and which are closely re­lated. The De­part­ment...
03/09/2014
An In­ter­na­tion­al Is­sue: 'Loss of Profit­s' and 'Con­sequen­tial Loss'
20 August 2020
UK Gov­ern­ment con­sults on re­vised EIA Reg­u­la­tions for Off­shore Oil and...
The De­part­ment for Busi­ness En­ergy & In­dus­tri­al Strategy (BEIS) is con­sult­ing on the pro­posed Off­shore Oil and Gas Ex­plor­a­tion, Pro­duc­tion, Un­load­ing and Stor­age (En­vir­on­ment­al Im­pact As­sess­ment) Reg­u­la­tions...
23/06/2014
CMS Guide to Mer­ger Con­trol in Europe 2014
11 May 2020
OGA launches its MER UK Strategy re­view con­sulta­tion
The Oil and Gas Au­thor­ity (“the OGA”) has launched a con­sulta­tion in­to its pro­posed up­dated Max­im­ising Eco­nom­ic Re­cov­ery Strategy (“the Strategy”), which it has re­vis­ited in line with the ob­lig­a­tion...
08 April 2020
Oil & Gas: Joint ven­ture is­sues in a low oil price scen­ario 
In the cur­rent low oil price en­vir­on­ment with ad­ded com­plic­a­tions triggered by the COV­ID-19 crisis, oil and gas joint ven­ture par­ti­cipants will doubt­less be con­sid­er­ing co-ven­turer risk. Pre­vi­ous oil...
10 February 2020
OGA launches me­di­ation pi­lot for resolv­ing UKCS li­cence dis­putes
On 3 Feb­ru­ary, the Oil and Gas Au­thor­ity (“OGA”) launched a year-long ‘UKCS Me­di­ation Pi­lot’ which aims to test the ex­tent to which me­di­ation can as­sist in resolv­ing dis­putes in­volving li­cences...
21 October 2019
Oil and Gas Au­thor­ity: Quarterly Up­date
Over the last few months the Oil and Gas Au­thor­ity (“OGA”) has is­sued a num­ber of pub­lic­a­tions. This has in­cluded a re­freshed set of As­set Stew­ard­ship Ex­pect­a­tions and the OGA’s first Wells Strategy....
26 September 2019
OGA is­sues five re­com­mend­a­tions fol­low­ing dis­pute res­ol­u­tion in­vest­ig­a­tion
The Oil and Gas Au­thor­ity (“OGA”) has used its non-bind­ing dis­pute res­ol­u­tion powers for the first time and has pub­lished a num­ber of re­com­mend­a­tions fol­low­ing an in­vest­ig­a­tion in­to a ca­pa­city dis­pute...