Mike Neumann, investment director for TilneyBestinvest, has resigned to pursue a career elsewhere.
Mr Neumann, who had been with the firm for nearly 20 years, was also a member of the management committee.
Jason Hollands, managing director for business development and communications, said: “Mr Neumann has been with the business since 1996 and has now decided to pursue a new opportunity.
“We thank him for his contribution over many years, a period in which the business grown into a substantial wealth management groups with 400 staff and £9bn of assets.”
The announcement of his departure came a week after Jonathan Fry, who set up the London-based firm Jonathanfry Plc in 1984, said he left the firm following its recent merger with Easby Gale and Phillipson.