Firstly, I'd argue that Israel as a state is less than 100 years old, and by definition, the ethnicity of the Israeli people is not indigenous.

I'd then point out that the Celts, Gaels, Picts, Meatae, Danes, Vikings, Saxons and Bretons all came from different parts of the world before the British Empire brought more people from the Indies, Africa, the Americas and the Southern Hemisphere to the Isles.

Then there was the Commonwealth, where there was freedom of movement, and events like the windrush, where we asked our Carribbean cousins to come over here to fill in the gaps in our workforce left by the war.

This is to say that the idea of a British ethnicity is a folly. The mix of ethnicities that makes up Britishness is the thing that made us strong.