Cardiff. Welsh. British. European.
In that order.
I support Cardiff City, Cardiff Blues, Glamorgan Cricket, Cardiff Devils, Wales in the football and rugby (both codes) and GB/UK if there is no Wales option - or Europe in that golf competition with the USA (even though I hate golf).
But just to be contrary, I support West Indies in international cricket. I have had a 50+ year strop about the team that plays under the England & Wales Cricket Board being called England. I don't care if I'm not rational on this - I will not support 'England'. If they (the authorities, the media... and the rest of the circus) can't be arsed to call the team England & Wales, I can't be arsed to pretend they have.