Gene: You up for a bit of play-acting, Raymondo?
Ray: It's all good, guv. It's not Hamlet.
Sam: That's good because Hamlet is a tragedy.
Ray: Trust you to know that... Poof.

Sam: Bloody 'ell, 'e looks like Andy Capp

Andy Capp is a now-classic British comic strip character, the subject of a self-titled strip since 1957. He represents a sort of British lower-class everyman, a drinker, carouser, fighter, gambler and general ne'er-do-well. He is known for his trademark flat cap over his head, which eternally hides his eyes from view, and, originally, for a cigarette always dangling "Bogart-like", from his lip (which stopped in the 80s), as well as continual fighting with his wife, Florrie (who gave as good as she got), though this stopped in the 90s over concerns it promoted domestic violence. While their relationship has always been dysfunctional and tumultuous, it was often depicted as based on deeper feelings badly executed and behaved.

Sam: This is not The Famous Five, Chris...

The Famous Five is a referent to a series of children's novels written by British author Enid Blyton. The tales center around four children and a pet dog, and take place during school holidays when home from boarding schools. Each time they met, they wind up in an adventure of some sort.

Ray: It's all good, guv. It's not Hamlet.
Sam: That's good because Hamlet is a tragedy.

Hamlet is the most well known of Shakespeare's plays, with many of its lines having worked their way into the general meme pool, most notably "To be, or not to be..."