Ethnic Brits are the people whose majority of ancestors two centuries ago were living on the British Isles.
But I was talking about Brits in a wider sense -- the people with British passports and voting rights at the time when those mass migration laws were passed. Which happened against their consent.
Ethnic Brits are immigrants .. all the way down. Wave after wave of them.
> the people whose majority of ancestors two centuries ago were living on the British Isles.
So .. not the House of Windsor then.
> Brits in a wider sense -- Which happened against their consent.
Near as I understand British history not much happened with the broad consent of the masses, hence all the castles and defensive structures built to protect "rulers" from "ethnic brits".
The people that migrated to Britain in the Windrush generation were also British citizens, if you check your history you may recall a long phase in which the then ethnic British majority (who all originated from outside of Britain having cleansed the prior group of ethnic brits) went about claiming large chunks of other peoples multi-generation lands as their own and dabbling in more than a smidgen of miscegenation.
This is just history, beware the seeds you sow, they have a way of coming home to roost.
The Celts, the Saxons, the Romans, the Danes, the Normans, the French, etc?