The issue here is that the island has had a shared cultural history and language for its entire history. Common Brittonic, and later Old English.
These sub-groups had their own languages yes. But the whole island also spoke Common.
For the people in Britain this produces a distinctly blurring of groups. One where you have your own independent group and also one where you have the larger shared group. If language and culture are the two things you use to define ethnicity then among people on terf island you have the muddying effect of two ethnicities, the minor and the greater.
The issue here is that the island has had a shared cultural history and language for its entire history. Common Brittonic, and later Old English.
These sub-groups had their own languages yes. But the whole island also spoke Common.
For the people in Britain this produces a distinctly blurring of groups. One where you have your own independent group and also one where you have the larger shared group. If language and culture are the two things you use to define ethnicity then among people on terf island you have the muddying effect of two ethnicities, the minor and the greater.
My apologies I am sorry for being unnecessarily hostile.