Among auditors of AIM-listed companies, BDO extended its overall lead by client numbers while PwC has nudged up into third place on the table by total constituent numbers after picking up two new clients and RSM has moved alongside Deloitte in a share of fifth place. These are the key findings of Adviser Rankings’ Q3 2019 AIM Advisers Rankings Guide.

BDO now audits 166 AIM companies, 55 more clients than second-placed Grant Thornton. BDO also leads six of the eight FTSE Sector rankings. PwC takes the laurels by aggregate client market-cap.

KPMG moves from third to fourth place in the Total AIM rankings and has seen a 19% fall in AIM client count since January 2019, 13 AIM clients lost this quarter, and 9 clients lost in the previous quarter – however, they remain joint first by the number of FTSE AIM 100 clients this quarter.

James Cowper Kreston and MHA MacIntyre Hudson both made headway in the lower half of the table. Nexia Smith & Williamson was unable to improve on 10th place despite an increase in its overall client count.

Adviser Rankings notes that: “Audits on London’s AIM haven’t attracted the same degree of scrutiny as those for the benchmark index, though it remains an important market for accountancy firms, if for no other reason than it provides further opportunities for consultancy work.”