Ah, it is very difficult to define 'natives' of the British Isles - in fact there appears to be very little genetic trace of the original hunter-gatherers that came her after the last ice age. New DNA analysis is changing the history of Britain on an almost daily basis - we Welsh are probably not Celts at all but descendants of the Beaker People that adopted Celtic art and culture! - well that's today's story anyway.Which 'natives' are you referring to?? Are you not a native of your country?
That's true of mainland Europe, the beaker culture was evident in many diverse populations, but in the UK it is now thought it was brought by a specific group of people.The Beaker people were not a DNA specific people, but a culture that spread all over Europe.
With every advsncement in DNA analysis, it seems our past is changed.