The 'ring' thing made me think of something I see a lot on "Not Always Right" -- call-center calls that begin, "Good morning, you're through to X Company." Where an American would say, "You've reached X company."

And I've noticed that British slang uses sexual terms much more casually than American slang does. Like, you might call someone a 'cunt' in America, but that's a really serious insult and also your grandma would wash your mouth out with soap, and 'twat' wouldn't be used at all (though I suppose 'dick' is roughly equivalent to 'knob' and 'jagoff' to 'wanker').

I was really confused the first time I encountered 'well' in the sense of 'very' ('he's well fit') -- took me quite a while to figure out what even was its grammatical function in the sentence.