Weil Gotshal & MangesThe largest City arms of US firms last year out-grew their UK rivals, according to new research which shows Latham & Watkins and White & Case both racking up 40%-plus income growth in 2001.

A Legal Week poll of the UK income of the largest US firms in London shows that heavy investment in the City practices of a select group of firms last year helped at least five firms to achieve fee income in excess of £25m.