Thanks to John D. Reid for the link to this very interesting video on YouTube.com entitled "
The Genetic History of the United Kingdom: the POBI project." The description of the video is as follows:
Garrett presents results from the People of the British Isles (POBI) project, an exploration of the fine-scale genetic architecture of the United Kingdom. Using the DNA of individuals sampled across England, Northern Ireland, Scotland and Wales, Garrett illustrates the striking correlation between an individual's genetics and their geographic origins. Furthermore, by comparing the DNA of UK individuals to that of individuals sampled from continental Europe, we identify clear differences in ancestry among different geographic regions of the UK, reflecting the genetic imprint of the Anglo-Saxon and Norwegian Viking migrations from several centuries ago.