More or less the Brit’s don't like anyone who isn't from their country (Britain).
They don't like the Spanish (they're hairy!)

they don't like the Portuguese (they're working-class!)

they don't like Americans (they're stupid!)

they don't like the French ( they got an accent!)

and they don't like the Belgians (they're retards!).

But the thing they "don't like" the most must be the Irish. :D