She also picked up the Designer Brand award on behalf of her self-titled label, topping off a busy year which brought her designs to the world stage in the form of Team GB's London 2012 kit.
Yesterday evening's event saw 12 other awards presented to fashion industry figures, with a host of big names posing on the red carpet at London's Savoy Hotel.
While Hollywood star Salma Hayek presented McCartney with her Designer of the Year statuette, British Fashion Council ambassador Samantha Cameron presented celebrity favourite Erdem with the New Establishment award.
The honour of Outstanding Achievement in Fashion was awarded to shoe designer Manolo Blahnik.
Fashionista Alexa Chung picked up the award for British Style, the third time she has been recognised at the for her style credentials.