Friend of Savile's

(UK) A person who has or is suspected of having unhealthy sexual ambitions. Derived from Jimmy Savile, a British TV presenter who was exposed as an abuser of hundreds of children after his death in 2012.

A: Who's that fella always hanging round outside the off-licence?
B: Pervy Pete? He gives me the creeps as well - always buying underage kids booze. Friend of Savile's if ever I saw one.
A: Tsk tsk.