I volunteer to conduct DNA adoption searches, using DNA results and genealogical documents to find birth parents, grandparents etc. It is a complicated process, but Ancestry makes it much easier with the way their site is set up.
Some of the trees on Ancestry can be really crazy trees. I just shake my head. In my work, information needs to be exact, checked and double checked. So I can start cussing up a storm when I see crap trees.
Years ago when commercial DNA genealogy sites began to spring up the ethnicity break down was pretty sketchy.
This is because not enough people had DNA tested to find comparison groups. But as more and more people are DNA testing we are getting better norming groups.
Yes I think it is safe to say your ancestors are from the British Isles. 
Edit history
Recommendations
0 members have recommended this reply (displayed in chronological order):
= new reply since forum marked as read