Sonny Takhar, who became the head of the label in 2004, will exit as the president of Syco Music.

"When I first decided to build Syco, it was my wish to create a place where young, talented executives could learn and grow their talent," Cowell says in a statement. "Sonny has been there every step of the way with me - and in this business loyalty is rare."

Takhar is leaving for a "new entertainment venture" in Los Angeles.