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Claire Barraclough
Associate

Claire Barraclough

London, United Kingdom
Languages
  • English
  • French

Claire is an associate in the Antitrust, Competition and Trade Team in London. She advises clients on a variety of competition and regulatory matters. Her competition experience includes advising on EU and UK merger control aspects of transactions, Article 101/Chapter I and Article 102/Chapter II investigations, competition litigation, and competition law risk management and compliance training. Claire also has particular expertise advising clients on the implications of EU and UK telecoms regulation, on the application of the UK foreign investment control regime, and advising clients in the automotive and technology sectors. 

Claire joined CMS in February 2022, having trained at a specialist technology, media and telecoms firm.

Relevant experience

  • Jaguar Land Rover in relation to parallel European Commission and CMA investigations into end-of-life vehicles.
  • NEO Energy in relation to the proposed merger of its offshore energy operations in the UK North Sea in a joint venture with Repsol. 
  • Porsche on an ongoing claim for alleged abuse of dominance and breach of the Chapter 1 prohibition in relation to its selective distribution system.
  • A global technology company in relation to a standalone claim for alleged abuse of dominance and breach of Article 101/the Chapter 1 prohibition.
  • Media Concierge in relation to its recommended takeover of National World.
  • An investor in relation to UK telecoms regulatory obligations and code powers.
  • 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.
  • An international investor on UK telecoms regulatory aspects of its acquisition of a fibre network provider in the UK. 
  • A supplier of vehicle finance products on competition law compliance.
  • A consortium of interested parties in relation to a CMA complaint and investigation related to the AdTech sector.
  • A large technology company in relation to the CMA’s Online Platforms and Digital Advertising market study. 
  • A UK fibre network provider in relation to a regulatory appeal against Ofcom’s 2016 Business Connectivity Market Review.
  • A UK Government Agency in relation to telecoms regulation and its impact on network rollout.   
  • A specialist software company in relation to a CMA Phase 2 merger review and subsequent appeal in the Competition Appeal Tribunal and application for permission to appeal in the Court of Appeal. 
  • Various companies on the strategic implications of the National Security and Investment Act 2021. 

Publications

Education

  • 2020 – LPC LLM, University of Law, London.
  • 2018 – GDL, BPP Law School, London.
  • 2016 – BA in History and French, University of Oxford, Oxford.
Practice Areas
Antitrust, Competition & Trade Competition and Cartel Investigations Foreign Investment Screening / National Security and Investment Act 2021 Merger Control Subsidy control / EU state aid Sectoral regulation
sectors
TMT - Technology, Media & Telecommunications Communications Media

Insights by Claire

See all Insights
Legal Update United Kingdom

Further reforms to foreign state investment rules for UK newspapers

30 Jan 2026 5 min read
Legal Update United Kingdom

Government consults on updates to Telecommunications Security Code of Practice

06 Oct 2025 3 min read
Legal Update United Kingdom

Government confirms reform to media ownership and merger control rules

14 Jul 2025 5 min read
News United Kingdom

CMS advises InPost on the acquisition of Yodel, one of the UK’s largest parcel delivery companies

22 Apr 2025 3 min read
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