More than one in five of the UK’s top 50 law firms have seen their fee income grow by at least 50% over the last five years, according to Legal Week’s analysis of firms’ financial performance.

The analysis, which spans the period from 2008-09 through to 2013-14, shows the pace and extent of growth at the upper end of the market, with six firms seeing at least an 80% rise in revenue. Of the 46 firms for which a full five-year comparison was possible, only seven brought in less in fee income in 2013-14 than five years previously, meaning 85% of firms grew in that period.