Nicholas Clegg, who has worked in banking for almost 60 years, took up his role on United Trust Bank's board when it was acquired by Insinger de Beaufort in 2001.
"I have thoroughly enjoyed working with such an extraordinary group of people," said Clegg. "Graham Davin, Harley Kagan [group managing director] and the management team are exceptionally talented and the bank has attracted some very high calibre non-executive directors to the board.
"Together with the bank’s dedicated staff, they are committed to creating a superb business providing customers with excellent products and service."
Graham Davin, chief executive of United Trust Bank, added:
It has been a privilege to work with Nick for the last 15 years at United Trust Bank. He has guided all of us through years of stellar growth as well as through the extreme volatility and risk of the 2008 crash.
At all times, his attention to detail combined with his focus on the key issues and his tenacity has allowed the bank to expand and prosper. He has been a friend, a promoter of clear thinking and a guide to ethics in business, and we are all the better for working under his chairmanship.