KPMG remains the auditor of the most companies listed on UK capital markets, according to the latest Hemscott quarterly rankings.
KPMG added two extra listed audit clients in the three months to 4 May, ending with 391.
PricewaterhouseCoopers (PwC) also gained two clients to finish the quarter with 332, leapfrogging Deloitte, which was down eight to 326.
Ernst & Young (E&Y) dropped four clients to 286 and Grant Thornton lost one client to 271.
There were no changes to the auditor rankings within the FTSE 100. PwC was up one to 41, KPMG remained steady on 24, Deloitte dropped one to 20 and E&Y was steady on 17. BDO has one FTSE 100 client.
Deloitte edged past PwC to become auditor of the most FTSE 250 companies with 67. PwC dropped four to finish with 66, KPMG was up three to 56, E&Y down two to 47 and BDO was steady on six.
All of the top four auditors of AIM companies lost clients, but the order remained the same. Grant Thornton has 186 AIM clients, followed by KPMG (152), BDO (127) and Deloitte (110).