Just more “we are a nation of immigrants” crap from the BBC Fabian Socialists trying to browbeat the British into accepting the illegitimate invasion of their country.
The British Isles were populated by Europeans from 25000 years ago before the last glacial maximum and again by those people and others who had moved south into the Iberian refuge while the glaciers dominated. Genetic studies on the Welsh show isolates that go back thousands of years in the same place. Translation: they’ve been there since far before time was counted.
This is all cooing by the vile grinches of the Left to try to smooth the way for the destruction of the ancient populace of the British Isles.
No, what they're doing is DNA studies on some people who have been deed over 400 years, and turning up one unexpected find. It's not credible to argue that Europe was uniquely immune to large scale immigration and population replacements.