Pomunist

A person from Great Britain or UK (same thing) who emigrates to another country and shares their opinions about what's wrong with their new place of residence or work.

'Arry: Hey oop, no decent curry 'ere!

Bill: Noo, no decent football, crisps or beer either!

'Arry: Aye, too warm in all.

Hickman: Well piss off back home then you Pomunist!