George Adams, chief executive of Kingfisher's trade division is to leave the group at the end of March.
It is understood that Mr Adams decided to move on after being offered new roles within Kingfisher's businesses.
George Adams, aged 50, is also managing director of European development at European Home Centre Retail Association (EDRA) - a role he took up in May last year.
Ian Cheshire, the new chief executive of B&Q-owner Kingfisher, is currently looking at ways of restructuring the company's senior management team as part of his plan to improve performance.
Shortly after taking over Mr Cheshire said he will also target better cash returns and focus on improving its use of capital as part of creating greater returns for shareholders.
Mr Cheshire reportedly wants to centralise the management teams and structure them around a 'single unified retail group'.
It is now expected that the restructuring will lead to roles changing for senior managers, and could lead to many more leaving the company.