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James Webber


James Webber is a partner of the London office and his practice focuses on EU and UK antitrust law.

James is recognized as a leading figure in the next generation of antitrust lawyers. He was selected by both Legal 500 and Chambers guides in the UK (2016) and Europe (2017), he was selected by Global Competition Review as one of the "40 under 40" brightest antitrust lawyers in the world. In 2017, Who’s Who Legal nominated James as “Future Leader” in competition law.

James’s competition practice and experience are very broad covering merger control, behavioural competition, State aid and litigation. His work has included acting as lead advisor on EUMR and CMA merger approvals, State aid notifications and litigation, defending cartel damages actions, advising in respect of UK market investigations and studies as well as counseling clients on on-going antitrust and competition matters.

Selected Experience

  • Albemarle in respect of global and EUMR phase 1 clearance for divestment of Chemetall
  • Sompo in respect of EUMR clearance for acquisition of Endurance plc
  • Jaguar Land Rover in respect of State aid supporting investment in a new manufacturing facility
  • Subordinated creditors of Banco Espirito Santo in the leading case against the European Commission's State aid clearance of a bank resolution.
  • Senior creditors of National Bank of Greece in respect of the State aid aspects of the restructuring of the bank.


  • “Antitrust treatment of online advertising markets”, in The In-House Lawyer, co-authored (2016).
  • “Another setback for UK private health care market inquiry”, in Law360, co-authored (2015).
  • “Takeaways from appeal of UK hotel bookings settlement”, in Law360, co-authored (2014).
  • “The EU General Court gets a rap in its knuckles”, in Law360, co-authored (2014).
  • “Access to evidence in market investigations,” in Competition Law Journal (March 2014).
  • “Observations on the implications of Pfleiderer for leniency programmes;” Chapter 16 of 
  • Cross-Border EU Competition Law Actions, Danov, Becker and Beaumont, Hart (2013).
  • “The De Minimis Exception: What Happens When Undertakings in Lieu are Available ‘in principle’,” Competition Law Journal (October 2011).

Speaking Engagements

  • “The Competition landscape post-Brexit”, panelist, IFLR In-House Counsel Summit (January 2017).
  • “Competition law in the digital environment”, IBC Legal Advanced Competition Law Conference (November 2016).
  • “Industry’s response to the Brexit result” , panelist, and Chair of conference, IFLR Competition Law Forum (November 2016).
  • "Competition Law for in-house counsel”, IFLR European General Counsel Summit (January 2016)
  • “Getting ahead in commercial law”, The Bright Network Festival (September 2015).
  • “Developments in private antitrust litigation”, Masterclass at Legal Confex, The Law Society of England and Wales (September 2015).
  • “The e-commerce sector inquiry: What, why and how?” GCLC Lunch Talk Series (May 2015).
  • ”Procedural fairness in merger market investigations”, Competition Law Association (May 2015).
  • “Litigated issues in mergers and markets cases: judicial review from supermarket scanners to ferry workers, cement plants to hospital data rooms”, 12th Annual BIICL Mergers and Markets conference (April 2015).
  • IFLR Competition Law Roundtable, with Chris Bright and Matthew Readings (April 2015).
  • “Non-horizontal mergers”, RBB Economics Annual Johannesburg conference, with Patrick Robbins (April 2015).
  • “The impact of the new regulator on competition law in practice” and “Information exchange and co-operating with competitors”, IFLR Competition Law Forum, with Chris Bright (December 2014).
  • “Where does state aid modernization leave beneficiaries and other interest parties?”, UK State Aid Law Association, State aid modernization conference (November 2014).
  • “Developments on private antitrust actions in EU competition law”, GCR Live 6th Annual Brussels – The conference about the bigger picture (November 2014).
  • “Implications for European cartel leniency policy of the ECJ’s judgment in Pfleiderer v Bundeskartellamt as well as the English High Court in National Grid v ABB and Ors, London School of Economics, Cross-border EU Competition Law Actions conference (April 2012).


  • King's College London, University of London, PgDip, EC Competition Law, 2006, Distinction
  • Nottingham Law School, Commercial Law and State aid, PgD, 2005, Distinction
  • Nottingham Law School, LPC (Commendation), 2000
  • University of Birmingham, LL.B., 1999


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