I saw that Geeker, in an earlier post, said that the slang term for 'greens' (greenbacks) in 14a was an American term. I had thought it was a British one! So I thought it was odd to have an American slang word in the clue referring to an English slang word. But now I come to think of it, it's more common for the Brits to use the cooked form of that word!