After Billy kidnaps his children so his ex-wife won't take them away from him, Phil and Jay track in down and, instead of belittling him for kidnapping his children, they call him stupid for being so easy to track.
Phil Mitchell: "Who do you think you are, hey, Ronnie Biggs? I mean, we tracked you down in, what, 4 hours?"
Jay Brown: "3-and-a-half. And that's with 45 minutes stuck on the M25."
** Also, Phil's almost gleeful smile when he notices his cars gone the same day Billy's does a runn'a with his kids.
Phil Mitchell: "Got'cha."