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In May 2024, Allen & Overy and Shearman & Sterling completed a transatlantic merger, forming A&O Shearman. The firm retains a prominent position in the London competition market, advising a prolific roster of blue-chip multinationals and financial services clients on the full scope of competition and antitrust matters. The team is renowned for its ability to handle high-value, multijurisdictional mergers, cartels, behavioural investigations, contentious matters and FDI issues. Antitrust co-chair Dominic Long, who splits his time between the London and Brussels offices, specialises in complex cross-border merger clearances and cartel investigations, while Matthew Readings regularly advises clients across a myriad of industries on merger control and FDI clearances. Praised as ‘very reassuring and calm in a crisis’, Philip Mansfield stands out for his expertise in the tech sector, while Thomas Masterman advises on the full spectrum of competition matters and, alongside co-head Long, has developed the firm’s UK national security and FDI practice.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘Philip Mansfield is very reassuring and calm in a crisis, instils confidence in clients, provides clear advice and can manage difficult conversations well.'
- 'Imogen Carr - recently newly promoted to partner, which is very well deserved. She is very capable, knowledgeable and hardworking, and also very user-friendly. She is able to provide practical advice rather than simply giving a technically correct legal opinion.'
Key clients
- American Tower Corp
- AP Moller Maersk
Work highlights
- Advised Broadway Technology on the sale of all its equity interests to Bloomberg L.P. for a purchase price of USD450m in cash.
- Representing GE, in relation to multijurisdictional merger control and FDI reviews of the proposed sale of its nuclear steam turbine business to EDF.