Gibson Dunn adds top-ranked A&O Shearman employment disputes partner

Published:
November 25, 2025 11:30 AM
Need to know

Robbie Sinclair is joining Gibson Dunn’s London office from A&O Shearman as a partner in its labour and employment practice group.

The US firm says it is focused on expanding its London disputes bench, building on its already strong transactional presence in the City.

Gibson Dunn has brought in top-ranked employment disputes partner Robbie Sinclair from A&O Shearman as the US firm expands its litigation capabilities in London.

He will join the firm’s labour and employment practice group, advising on a range of contentious and advisory matters with a focus on litigation, crisis management and investigations.

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Sinclair had been at A&O Shearman for more than a decade and became a partner at legacy firm A&O in 2019.

Meeting demand

Gibson Dunn’s global labour and employment practice advises multinationals and financial institutions across the US, UK, Europe, the Middle East and Asia. The firm said Sinclair’s hire "provides a platform in the UK for employment litigation matters and meets the key strategic needs of clients in their boardrooms."

Osma Hudda, co-chair of the London disputes group and co-partner in charge of the London office, said: "Client demand for business protection, complex investigations, whistleblowing, and employment litigation continues to rise in the UK, US, and other key markets."

"Building on the strong performance of our transactional practices in London, we are executing a focused expansion of our litigation and investigations bench."

What they said

James Cox, partner in the labour and employment group, said: "Robbie expands our senior bench for High Court litigation, team moves, and investigations. He immediately enhances the seamless support to corporate, private equity, and finance clients through the deal and disputes lifecycle."

New joiner Sinclair said: "Clients want consistent advice across jurisdictions and a team that can move quickly from advisory to enforcement. I’m excited to build that with colleagues in London, the US, and internationally."