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Portrait of Jacqueline Vallat

Jacqueline Vallat


CMS Cameron McKenna Nabarro Olswang LLP
Cannon Place
78 Cannon Street
United Kingdom
Languages English, French

Jackie Vallat is a partner in the Antitrust, Competition and Trade Team in London.  She advises on a range of antitrust, merger control and foreign control issues, including merger control and foreign investment control implications and strategy in international transactions, antitrust compliance and risk management. Jackie focuses on financial services, energy and TMC, and has advised extensively on antitrust and merger/foreign investment control issues in those sectors. Jackie also has particular expertise advising on regulatory issues, especially UK airport regulation and the EU and UK regulatory framework for electronic communications.  Jackie frequently advises TMC clients on the regulatory aspects of their mergers and acquisitions.

Prior to joining CMS, Jackie was a stagiaire at the European Court of Justice and the European Commission, where she worked on competition and IP issues associated with the ‘Open Innovation’ model resulting in a report published by the European Commission.

Jackie is admitted as a solicitor in England and Wales and is on the EU List registered and regulated by the Dutch Brussels Bar.

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Relevant experience

  • BT on its agreement with Warner Bros. Discovery, Inc. to form a 50:50 joint venture to create a new sports offering for the UK and Ireland.
  • Cadent Gas on its successful appeal to the CMA of Ofgem’s RIIO-2 gas distribution price control.
  • A global ad tech provider on multiple investigations across the EU (including the UK).
  • Arora Group on the competition and regulatory aspects of its planning application for Heathrow expansion and its participation as an interested party in the judicial review claims against the Government’s decision to designate the Airport National Policy Statement.
  • EI Group on the merger control aspects of its £1.27bn sale to Stonegate Pub Company (cleared with undertakings by the CMA at Phase 1).
  • Comcast on all media merger control and media regulatory aspects of its ultimately unsuccessful US$65 billion bid to acquire 21st Century Fox.
  • ITV plc on the competition aspects of its licensing arrangements with ad-tech firm Amobee to create a programmatic TV ad platform.
  • SSE plc on the competition and regulatory aspects of the sale of a 50% stake of its telecommunications business to Infracapital for £380m.
  • A fund manager on the initial stages of the Financial Conduct Authority’s first ever decision using its competition enforcement powers, including responding to the statement of objections.
  • Aviva Investors on the competition and regulatory aspects of several recent acquisitions in the sector, including its £75 million stake in Truespeed and £46 million investment in Country Broadband.
  • Liberty Global on coordinating the media and communications regulatory requirements and notifications relating to the Czech, Hungarian and Romanian aspects of the €18.4 billion sale of its European assets to Vodafone.
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Memberships & Roles

  • Member of the Law Society's Competition Section.
  • Women in Telecoms and Technology.
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  • Insurance Broking Practice and the Law, Competition Chapter (co-author)
  • GCR’s Antimonopoly and Unilateral Conduct in the UK (2016 to 2020) with Brian Sher
  • LexisNexis’ TMT Regulation chapter of The Financing of Intangible Assets: TMT Finance and Emerging Technologies (co-author)
  • PLC First Use of FCA competition powers: flexing its muscles (April 2019) with Caroline Hobson, Simon Morris and Alison McHaffie
  • CMS Network Sharing Study 3.0 (December 2017) with Chris Watson and Russell Hoare
  • European Commission’s Intellectual Property and Legal Issues in Open Innovation (May 2009)
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  • 2011 – LPC (Distinction), BPP, London
  • 2010 – GDL (Distinction), Kaplan Law School, London
  • 2008 – LLM (High 2:1), University of Cambridge, Cambridge
  • 2007 – Maîtrise de Droit Economique et des Affaires (Mention Tres Bien), Université de Nice-Sophie Antipolis, Nice (France)
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10 key as­pects of the re­vised EU com­pet­i­tion law in the field of dis­tri­bu­tion...
The new Ver­tic­al Block Ex­emp­tion Reg­u­la­tion (VBER) and the new ac­com­pa­ny­ing Ver­tic­al Guidelines (VGL) were pub­lished on 10 May 2022. The new VBER will enter in­to force on 1 June 2022 and ap­ply for the next twelve years. The new VBER/VGL in­tro­duce sev


The UK’s new di­git­al re­gime reg­u­lat­ing firms with “stra­tegic mar­ket status”:...
This is the second in a series of art­icles ana­lys­ing spe­cif­ic fea­tures of the di­git­al and com­pet­i­tion re­forms con­tained in the re­cently pub­lished Di­git­al Mar­kets, Com­pet­i­tion and Con­sumers Bill (the Bill)...
For­eign dir­ect in­vest­ment con­trol in the UK and around the world
For­eign dir­ect in­vest­ment (FDI) con­trol plays an in­creas­ingly im­port­ant role in M&A risk as­sess­ment. Nav­ig­at­ing a pleth­ora of new or ex­pan­ded re­gimes adds in­creas­ing time and cost to trans­ac­tions, of­ten...
UK mer­ger con­trol re­form: sig­ni­fic­ant ex­pan­sion planned in the Di­git­al...
As noted in our re­cent Law-Now the UK Gov­ern­ment has fi­nally pub­lished the long-awaited Di­git­al Mar­kets, Com­pet­i­tion and Con­sumers Bill (the Bill).This is the first in a series of art­icles ana­lys­ing spe­cif­ic...
Spe­cial­isa­tion and R&D: how can busi­nesses col­lab­or­ate without breach­ing...
Cur­rent eco­nom­ic pres­sure im­pact­ing busi­nesses and their sup­ply chains, com­bined with more press­ing de­mands for bet­ter ESG and in­nov­a­tion, are driv­ing busi­nesses to col­lab­or­ate more closely. This in­cludes...
Com­pet­i­tion re­form and the UK’s an­swer to Big Tech: the Di­git­al Mar­kets,...
On 25 April 2023, the Gov­ern­ment pub­lished and in­tro­duced to Par­lia­ment the long-awaited Di­git­al Mar­kets, Com­pet­i­tion and Con­sumers Bill.  The Bill’s scope is wide and cov­ers three broad areas: the...
CMS’ in­ter­act­ive Di­git­al Mar­kets, Com­pet­i­tion and Con­sumer law reg­u­lat­ory...
Wel­come to CMS’ in­ter­act­ive Di­git­al Mar­kets, Com­pet­i­tion and Con­sumer law reg­u­lat­ory hub. Here you will find all of the re­sources you need on the Di­git­al Mar­kets, Com­pet­i­tion and Con­sumers Bill and the UK’s reg­u­lat­ory land­scape fol­low­ing the Gov­ern­ment pub­lic­a­tion of its long-awaited Di­git­al Mar­kets, Com­pet­i­tion and Con­sumers Bill.
Di­git­al Mar­kets Act/ Di­git­al Mar­kets Unit: key im­plic­a­tions for busi­nesses
The EU has led the way with the in­tro­duc­tion of sec­tor-spe­cif­ic reg­u­la­tion to ad­dress com­pet­i­tion and wider is­sues with large on­line plat­forms des­ig­nated as "gate­keep­ers".  The EU Di­git­al Mar­kets Act...
Stock­take a year on: how the UK Na­tion­al Se­cur­ity re­gime ap­plies to the...
The UK Gov­ern­ment views the en­ergy sec­tor as a crit­ic­al part of the eco­nomy. Des­pite the Na­tion­al Se­cur­ity and In­vest­ment Act 2021 (“NSIA”) only hav­ing been in full force for just over a year now...
UK reg­u­lat­or joins the glob­al en­force­ment trend and warns em­ploy­ers to...
The over­lap between em­ploy­ees’ rights and com­pet­i­tion law has long been pre­dicted by com­pet­i­tion spe­cial­ists. Car­tel en­force­ment in la­bour mar­ket agree­ments be­came a fledgling activ­ity of com­pet­i­tion...
CMS ad­vises Oore­doo Group on the sale of its tele­com busi­ness in My­an­mar...
CMS has ad­vised Oore­doo Group, an in­ter­na­tion­al com­mu­nic­a­tions com­pany op­er­at­ing across the Middle East, North Africa and South­east Asia, on the sale of its tele­com busi­ness in My­an­mar to Nine Com­mu­nic­a­tions...
CMS ad­vises con­sor­ti­um on ac­quis­i­tion of in­terest in world’s largest off­shore...
In­ter­na­tion­al law firm CMS has ad­vised a con­sor­ti­um com­prised of GLIL In­fra­struc­ture and Oc­topus En­ergy Group on its agree­ment to ac­quire a 12.5% in­terest in the Hornsea One Off­shore Wind Farm from Glob­al...
CMS Me­dia Up­date Morn­ing
Our pop­u­lar Me­dia Up­date Morn­ing re­turns.We are de­lighted that this ses­sion will be our first in per­son me­dia event since be­fore the pan­dem­ic and we are very ex­cited to see you all. Please do come early...