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There is significant amounts of Neanderthal genes in British (and all European ) genomes. "Neanderthal-derived DNA was found in the genome of all contemporary

There is significant amounts of Neanderthal genes in British (and all European ) genomes. "Neanderthal-derived DNA was found in the genome of all contemporary populations". [1] [1] https://en.wikipedia.org/wiki/Interbreeding_between_archaic_and_modern_humans#Neanderthals https://en.wikipedia.org/wiki/Interbreeding_between_archaic_... See also: https://www.sciencemag.org/news/2019/01/genetic-data-half-million-brits-reveal-ongoing-evolution-and-neanderthal-legacy https://www.sciencemag.org/news/2019/01/genetic-data-half-mi... ( Genetic data on half a million Brits reveal ongoing evolution and Neanderthal legacy ) https://science.sciencemag.org/content/358/6363/655 https://science.sciencemag.org/content/358/6363/655 : "We find that non-African populations outside Oceania carry between 1.8 and 2.6% Neandertal DNA"

udp 6y ago
As you said, all contemporary populations. So there is nothing to suggest that the British Isles was a Neanderthal genetic time capsule prior to occupation by the Anglo-Saxons, Romans, or Celts. Likely all of these incoming populations were equally as Neanderthal as the existing inhabitants.