Hoping to get an angle on our mutual (elusive) Grandfather, I asked my male 1st cousin on my Father's side to do one. Our Father's were brothers, their parents from Swansea and Manchester respectively. My cousin's mother was Scottish. His results were:
Europe West: 57%
Ireland/Scotland/Wales: 32%
Scotland /Great Britain: 8%
Wales & the West Midlands /Low Confidence Regions/ Iberian Peninsula 3%
He took an Ancestry, (Autosomal) one, and so both parent's DNA looked at, but even so, - it's clear as mud to me!
Romilly.