By Sam Richardson
U.S. law firms are expanding their London offices at speed. This is no longer a short-term hiring push or a reaction to market conditions. It is a long-term strategy, and it is changing the shape of the City legal market.
Kirkland & Ellis, Latham & Watkins, Goodwin and Paul Weiss are among the fastest growers. Each has increased headcount steadily, particularly at partner and senior associate level. The focus is on areas that drive revenue such as private equity, M&A, finance, restructuring and, increasingly, disputes and investigations.
London is now a core office for many U.S. firms. It is not a support base for New York. Deals are run from London, clients are serviced from London, and senior leadership is being placed here to grow European business.
Why London Remains a Priority
London matters because clients want it to. It remains the main legal hub for Europe and a key link between U.S. capital and international markets. English law dominates global contracts, and London courts continue to be used for major cross-border disputes.
For U.S. firms advising private equity sponsors and global corporates, a strong London team is essential. Clients expect the same quality, speed and commercial focus they receive in the U.S. That expectation is driving investment in people rather than office numbers.
How U.S. Firms Are Growing
U.S. firms are not opening large networks of offices across Europe. Instead, they are building bigger, stronger teams in London. The aim is depth, not spread.
Kirkland has built one of the largest U.S. practices in the City, with a clear focus on private equity and high-value transactions. Latham continues to grow across corporate, finance and disputes, operating a full-service model in London. Goodwin has expanded quickly by aligning closely with private capital and growth companies. Paul Weiss has invested in senior hires to strengthen its European M&A and infrastructure offering.
In many cases, growth comes from hiring whole teams or senior partners with established clients. This allows firms to scale quickly and compete immediately.
Pressure on the Talent Market
The biggest impact is being felt in recruitment. U.S. firms are actively hiring partners and senior lawyers from UK and international firms. Pay plays a role, but it is not the only factor.
Lawyers are attracted by clearer progression, tighter practice focus and the chance to work on fewer, larger matters. Decision-making is often faster, and individual performance is rewarded more directly. For many, the trade-off in hours feels worthwhile.
This has increased pressure on UK firms, particularly around retention and compensation. The London market is now more competitive than it has been at any point in the past decade.
Beyond Private Equity
Private equity remains the main driver, but it is no longer the only one. U.S. firms are expanding disputes, investigations, restructuring, regulatory and infrastructure teams in London.
This reflects client demand and maturity. As U.S. firms take on more European work, they need full coverage. London is being used as a base for wider European matters, often without opening offices elsewhere.
What This Means for London
The result is a more competitive and more divided market. A small group of global firms are competing for the same work and the same people. UK firms are being pushed to define their strengths more clearly, whether through specialism, mergers or changes to how they reward talent.
U.S. firms are not replacing UK firms across the board. But they are taking a growing share of the highest-value work and senior hires. That shift is likely to continue.
London remains one of the world’s leading legal markets. What is clear is that U.S. firms now play a central role in shaping how it operates.
Contact Us
For a confidential discussion about your recruitment requirements or career aspirations, please contact Sam Richardson. Email: sam.richardson@wearebuchanan.com