Comparing English/Irish DNA with Scottish and Welsh

[Norb]

English with Irish has been done and it seems they are both indistinguishable from other NW Europeans, but how do Scottish and Welsh compare with other NW Europeans?

I am struggling to see, how despite all the varied ancestry NW Europe has, that they are all very similar genetically?

[Grace O'Malley]

English with Irish has been done and it seems they are both indistinguishable from other NW Europeans, but how do Scottish and Welsh compare with other NW Europeans?

I am struggling to see, how despite all the varied ancestry NW Europe has, that they are all very similar genetically?

They are all very similar. In a British Isles context Irish and Scots are closest to each other with Scots intermediate between Irish and Scots. West Scots are basically like the Irish. The English separate the Irish & Scots from the Welsh so the Irish & Scots are closer to the English than they are to the Welsh and vice versa for the Welsh. Which is interesting. All those populations are very close to each other though.

[Sikeliot]

This is how it works in a nutshell, as confusing as this will be...

South Wales, Cornwall, and southwestern England are genetically closest to one another.
Southeast and central England are a "Germanic" influenced version of the above.

Northern Wales, Northern/northwestern England, and eastern Scotland are similar to one another and to Northern Irish Protestants (Ulster Scots), and are intermediate between SE England and Ireland.
Western Scots are closer to the "Gaelic" Irish.

Among the Gaelic Irish, Leinster and Connacht shift toward Britain (as a whole) more than Munster or the indigenous people of Ulster does.