Huh ? If they are English by descent, "indigenous" to England, then they ARE English by ethnicity. How do you know how many of them have other English ethnic feautures and how many don't ? If they are of English descent, they will automatically have other things of being ethnically English. They already for sure have many things on that list for being English: English language, religion, descent, and who knows which do or do not have other parts of Englishness. You gotta be more open-minded on this. Ethnicity isnt confined to a political or national boundary. Where you live/where you are born or your nationality does not equal your ethnicity. English descent and other things of "Englishness" = English ethnicty. Got it ? I hope so cause if you don't, then you need help, honestly.