The largest U.S. based law firms in London outperform their U.K. counterparts when it comes to revenue per lawyer, making them the highest-generating firms in the country at a per-lawyer level.

Law.com International’s latest ranking, determining firms’ revenue per U.K. lawyer, shows the top five spots are all taken by U.S.-headquartered firms, being the only ones to secure a figure greater than £1 million.