Continuity mistake: The first train Kate boards (where Guy gets dragged off the train by a mysterious attacker) is one of the new Jubilee Line trains built in 1996. However, when Kate escapes from the train through the rear cab, the train has become a much older model built in the 1960s/70s. (00:21:00)
Arthur: It depends which area you're in. If you're in the areas around Chinatown, there's a strange sort of seafood smell, whereas in Soho.
George: Oh wow wow wow stop right there! This ain't the fuckin' Discovery Channel.
Arthur: I'm just trying to educate you, that's all.
George: Trust me, there's nothing I wanna know about shit.