Well any with ancestry that’s more than a hundred years old.
1500 years ago all Britons were Celts. Then the Angles, Saxons and Vikings turned up. They carved out their own areas initially but ultimately they got jiggy so today they’re all a mix of those “tribes”. Obviously new migrants not included.
Fact!
There’s the odd quirk. Boris Johnson’s great grandfather was an Ottoman so a small percentage of his ancestry is Ottoman.
