Claire Jeffs

Slaughter and May (London)
Lawyer (Partner)

Claire was educated at Cambridge and Brussels universities and works in Slaughter and May’s Brussels and London offices. She has been involved in a large number of high-profile merger cases before the UK and EU competition authorities, as well as coordinating merger approvals worldwide. On the contentious side, she has been involved in many cartel and other behavioural cases, including on appeal to the General Court in Luxembourg. Highlights include advising Vodafone on its acquisition of parts of Liberty Global; Shire on its takeover by Takeda; and Google in relation to the European Commission’s antitrust investigation into allegations that certain of its business practices in the search and advertising sectors violate European competition rules. Claire is fluent in French and Russian and has good German.

Linked authors

University College London
ESSEC Business School (Cergy)
University of Oxford
General Court of the European Union (Luxembourg)
UK Competition Appeal Tribunal (London)
Oxera (Oxford)
British Competition Authority - CMA (London)
Skadden, Arps, Slate, Meagher & Flom (Brussels)
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