Mather will depart from Mulberry after eight years “to seek further career opportunities,” a spokesperson for the company said, adding that it had been "entirely his decision to leave".
He will remain on the board until 30 June 2016 in order to ensure that there is a smooth transition with his successor.
Mather’s departure comes after a disastrous few years for the group after an ill-fated move upmarket sent profits tumbling and its core customers fleeing to other rival brands. A new chief executive, Thierry Andretta, and creative director, Johnny Coca, have been brought in to get the brand back on track.
However sales have started to show signs of improvement this year thanks to new, more affordable ranges such as its Lily handbags and new marketing campaigns
Mulberry’s chairman Godfrey Davis, said: “The board would like to express its thanks to Roger for his valuable contribution to the group over the past eight years during which time we have nearly quadrupled our turnover.
"The search for his successor has commenced and we are delighted that Roger has agreed to continue with the group until the end of June 2016 in order to ensure a professional handover of duties.”