Jonathan Howell is to leave Close Brothers Group after 10 years as group finance director.
Howell will remain in his role as group finance director and a member of the group executive committee and board of directors until the annual general meeting in November 2018.
The board will now commence a formal search for his successor involving both internal and external candidates.
Preben Prebensen, group chief executive, said: “Jonathan has made a very substantial contribution during a period of significant growth and development, driving the group’s financial strategy and bringing sound judgement and a sharp focus on shareholder value.
“On behalf of the board I would like to thank Jonathan for his dedication and leadership over many years and wish him all the best for the future.”