The story
The firm was founded in 1865 by Walter Howard. Historical name changes and mergers with many different firms have brought the partnership to where it is today. The name Baker Tilly was created in 1988 through the merger between Howard Tilly and Baker Rooke.
The firm continued to grow through several mergers, including the purchase of the trading subsidiaries of RSM Tenon Group in September 2013. Following the purchase of RSM Tenon in April 2014, Baker Tilly became a member firm of RSM Global having served notice on Baker Tilly International, the international network to which it previously belonged.
The firm changed its name on 26 October 2015, adopting RSM as the common brand name for more than one hundred firms within the RSM International network.
From Wikipedia’s article on RSM UK, shared under CC BY-SA 4.0.4