anyone who actually reads the whole article will see they they found unique dna groups in wales, cornwall, west Scotland an Ireland. they said they were surprised. this is the celtic dna profile, while the headline is totally misleading to these findings and most dna findings. in fact one researcher has found the "Ossian" gen he credits as the pictish original genotype. this gene is shared with a significant group in northern spain, which gives physical evidence to support the leabhear gabahla, the ancient irish history, which says the irish sailed from northern spain to take Ireland.
the "celtcs" are indoeuropeans. there is a significant non indoeuropean gene grouping in the celtic fringe areas. the insular celts were always different from ther mainland.
that they are not a race should surprise no one. celts did not every believe in race. that's a European great powers nationalist , and racist idea forwarded by the English foremost, next germans.
celts are a linguistic and cultural group that has distinct dna profiles amongst them that appear to go back to before the last iceage, the Ossian gen type is probably the group of sapiens who survived the last ice age in spain.
of course the idiots on mudcat will find all kinds of new ways to attack celtic culture(and African and native) using any possible strained interpretation of the actuall evidence. as did the bbc by not even reading their own article.