Chris Davies, 58, will leave SIG in March 2013 after 19 years' service with the company – the last five as group chief executive.
He will be succeeded by Stuart Mitchell, who until last June was CEO of Wilkinson Hardware Stores. Mr Mitchell will join SIG as CEO designate on 1 December 2012 and take over in March.
SIG said that Mr Mitchell brought “proven leadership and strategic skills, a strong commitment to operational excellence and innovation, and a deep understanding of multi-site distribution and supply chain management”. Prior to Wilko’s, Mr Mitchell had held managing director positions at Hutchison Whampoa and J Sainsbury.
SIG chairman Leslie Van de Walle said: "Chris leaves SIG in good shape and in good hands. As CEO, he has further strengthened our European business, integrated and focused our UK operations, rejuvenated our senior management team and ensured that we have a robust balance sheet and a solid platform for future growth.
"I would also like to welcome Stuart to SIG. The board believes he has the right skills and experience to be a worthy successor to Chris and we are looking forward to working with him through the next stage of the group's development."