Philippe Chappatte > Slaughter and May > London, England > Lawyer Profile

Slaughter and May

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Partner; Philippe is Head of the Competition Group.

He is resident in our London office, but also spends a proportion of his time in Brussels. He is responsible for the running and development of the firm’s global competition practice, including through our Beijing and Hong Kong offices and ‘best friend’ firms.

Philippe has extensive experience of both EU and UK competition law with expertise in merger, cartel, behavioural and competition litigation cases in both jurisdictions.


Articled Slaughter and May; qualified 1982; partner 1989.


French; reasonable German.


Co-founder and co-president of the European Competition Lawyers Forum.


Oxford (BA Law 1st Class); Université Libre de Bruxelles (Lic Sp Dr Eur highest distinction).

Lawyer Rankings

Belgium > Competition: EU and global

Slaughter and May‘s team is highly rated by clients and peer firms alike, with individuals such as Philippe Chappatte (‘a legend of the antitrust bar, and a real pleasure to work with‘), and Jordan Ellison and Anna Lyle-Smythe (both of whom ‘bring keen insight, are exceptionally practical and very efficient‘) being singled out for praise. Office head John Boyce, who has been based in Brussels since 1996, is another well-known name. The firm has an enviable reputation in the market, owing to its excellent coverage of high-profile matters across the full spread of competition law. Ellison and Lyle-Smythe are working with the London office to advise Google on the EC’s Article 102 investigation into its AdSense for Search advertising services. Market investigations, sector inquiries and state aid cases are other cornerstones of the practice. In the merger control space, Boyce was among the advisers to Tata Steel on the competition law aspects of its proposed 50/50 joint venture with thyssenkrupp. In the telecoms sector, Kerry O’Connell and others are assisting Vodafone with the merger control aspects of its proposed acquisition of Liberty Global’s telecoms business in Germany, the Czech Republic, Hungary and Romania. Senior associate Alexander Chadd is also recommended.

London > Corporate and commercial > EU and competition

(Hall of Fame)

Philippe ChappatteSlaughter and May

Slaughter and May’s competition group provides full-service competition law advice on high-profile merger control cases, contentious and regulatory issues, and state aid matters. The London team works seamlessly with the firm’s sole continental European office in Brussels, advising on high-profile matters including Vodafone’s proposed £18.4bn acquisition of Liberty Global’s telecoms business in Germany, the Czech Republic, Hungary and Romania. The group is also representing clients in a number of Phase II merger cases before both the CMA and the European Commission; among multiple examples, one noteworthy highlight is advising Tata Steel on its proposed joint venture with thyssenkrupp, aiming at the creation of a leading European steel enterprise. Another stable source of work for the team comes in the form of  instructions from clients in the consumer protection space. Practice head Philippe Chappatte leads a team advising two parties in the CMA consumer law investigation into accommodation booking sites, while Bertrand Louveaux is leading on handling competition law aspects of client GlaxoSmithKline’s divestment of Horlicks and other consumer healthcare nutrition brands to Unilever. Claire Jeffs has been leading a team assisting Google with the European Commission’s Article 102 investigation into its AdSense for Search advertising services. Isabel Taylor has particular expertise in state aid law. Special adviser Jackie Holland stands out for her significant experience in the public and private sectors.