Federal contacts to the "consultancy" owned by ex-PwC CEO Luke Sayers have exploded two-and-a-half times since the PwC "ban".

Cate Sayers has quit as director from the charity she founded and ran with her husband, former long-time PwC Australia CEO Luke Sayers.

Former PwC Australia boss Luke Sayers has stood down as president of the AFL’s Carlton Football Club over a “penis photo scandal”.