In British English, a quid is slang for a pound sterling – the British currency. Like the US, the UK has plenty of terms for money – but none of them are the same as the US. Dosh, cash, quid, bunce, bangers and mash (cockney rhyming slang = cash) all mean money. Aubergine...
From a strictly sociolinguistic perspective, what is the nickname Scots, Irish and Welsh use for the English? This has nothing do with insulting anyone, just intellectual curiosity. If interested, I can tell you what slang terms are used in the US for different ethnicities: Polack (Pole), ...