Did the original post get deleted then?
I think the “white privilege” thing annoys people so much as it is almost used as a #nodebate phrase to silence or put down arguments which may be reasoned (or not, as the case may be) because the proposer is white.
Another reason it annoys people is because a white person who is poor or from a non-British background may not feel particularly privileged.
An Irish or Eastern European name or accent is enough to attract discrimination (I have experienced this myself as I’m white Irish).
Therefore if “white privilege” means “privileged to have not experienced racism” or “financially/ socially privileged” then there is a large section of the white population of Britain to whom it doesn’t apply.
Perhaps “white middle-class British privilege” would be a more accurate moniker.
For reference, in Liverpool it used to be the case that “No Blacks, No Dogs, No Irish” was a common sign put up in hotels, boarding houses and pubs, and a slang term for a black man was a “Smoked Irishman”.
Now can you see why the very phrase “White Privilege” is problematic?