When I was living on London in the early 1980s, I picked a bit of London slang, lunch box - -attached to motorbike. Does it have any currency in the rest of the UK?
Bobby: Slang term for a member of the (Originally London's Metropolitan) Police derived from the name of Sir Robert Peel, who established the force in 1829. Police officers in London are also known as “peelers” for the same reason.
Prat: Originally, meant “bottom”, in the sense of “arse” (as distinct from “arsehole”). A 16th century word, in the 1960s it started to be applied jocularly to mean an idiot
Geezer: A slang term for a man, e.g. "some geezer was here earlier" and less often as complimentary phrase ie "he is a proper geezer".
Bint: A condescending and sometimes derogatory term for a woman, referring to a disagreeable and domineering woman, a slightly derogatory term for a young woman.