Lee Rees-Oliviere, the mastermind behind Tesco's premium F&F clothing range, has quit the retailer to start his own label.

Rees-Oliviere, Tesco's head of design, plans to open a store in Camden to showcase his own T-shirt range Harvey Mushman. However, he will work for Tesco on a consultancy basis for the F&F men's range, which carries his name.

He joined Tesco in October 2005 and was tasked with designing a high-end clothing range to rival the likes of Debenhams. But Rees-Oliviere believes his work is now done. "I'm proud to have launched the first premium range for a supermarket, but it's time to launch my own collection now," he said.

A Tesco spokseman said it had not yet appointed a replacement for Rees-Oliviere and may seek to promote a member of the "strong team" behind him.