Drawing on over 15 years of experience, Marie-Claire is an antitrust specialist advising on merger control and foreign investment aspects of complex global transactions, as well as broader antitrust issues including investigations, abuse of dominance and complex vertical agreements. 

She has advised corporate clients and financial investors across a range of sectors including technology, agriculture, pharmaceuticals, energy, retail, healthcare, sports rights and industrials. 

In addition to coordinating complex multi-jurisdictional advice and delivering EU and other global merger control and foreign investment clearances, she has extensive UK CMA experience, having acted for clients on a number of complex CMA investigations, both at Phase 1 and Phase 2 and having delivered multiple informal CMA clearances. She regularly advises on CMA engagement strategy in global deals.

She also regularly counsels clients in relation to compliance across all aspects of competition law, including horizontal and vertical commercial agreements and dominance. She has also represented clients before the EU and UK regulators in relation to both cartels and abuse of dominance as well as in the context of market investigations.

Marie-Claire is recognized in each of the annual editions of Who’s Who Legal: Competition – Future Leaders from 2017 to 2024.

Representative Experience

• Advising Unity Technologies in relation to its $4.4B Acquisition of ironSource

• Advising Nikon Corporation, a globally active Japanese manufacturer of optical technology solutions, in connection with the public takeover of SLM Solutions Group AG, a Lübeck-based manufacturer of metal 3D printers
• Advising SoftBank in Connection with $3.4 Billion Combination of Eutelsat and OneWeb
• Advising Endurance Acquisition Corp in connection with its investment in Satixfy
• Advising a major record label in relation to a CMA market study into music streaming
• Advising a major energy company and fund manager, active in retail, generation and fund management in relation to the merger control and foreign investment aspects of strategic investment
• Advising a global software company in relation to a CMA merger control investigation into its acquisition of a key competitor
• Advising a UK grocery retailer in relation to a CMA investigation into a failed merger between two of the four major UK grocery retailers
• Advising a consortium of financial investors on the global merger control and UK and foreign public interest aspects of a takeover of UK-based satellite telecommunications company