The international offices of the top 10 global law firms contributed more to revenue and profit growth than their U.K. operations for the first time last year, according to PwC’s latest annual law firm survey.

PwC’s research, which is based on a survey of the U.K.’s 100 largest law firms, found that during 2017-18, the top 10′s international offices accounted for an average of 83 percent of total global fee income growth, compared to 50 percent in 2017.