Global revenue at the Big Four accounting firms rose more than 10% in 2018, their strongest annual growth in at least a decade, as they continued a long shift toward consulting over their core auditing businesses.

The four firms — PricewaterhouseCoopers, Deloitte Touche Tohmatsu, Ernst & Young and KPMG — had $148.2bn in combined global revenue in fiscal 2018, up 10.4% from $134.3bn the previous year in US dollar terms. KPMG, the last of the four to disclose its numbers, said this week it had 9.7% global revenue growth in fiscal 2018.