Slang deriving from Britain.
British slang isn't the same as the olden days we don't still say stuff like 'jolly good show' and eat cucumber sandwiches.. unless you are quite posh. We do still say 'bloody hell' quite a lot though. Mostly it is stuff like; innit chav well good brill mingin' wkd etc.
Just because one is british does not mean one uses british slang, one can be quite proper.