"So, an awful lot of British people find the burqa or niqab upsetting and it makes them uncomfortable, are you a okay with them being asked to leave? Or how about Diane Abbott? She upsets a lot of people. Or Salman Rushdie? Or Malala? Or Nicola Sturgeon? Or any of the TERF posters on here? Or a transperson?"
Alright, now we're getting to discrimination vs. disagreement over beliefs.
Burqa & niqab - this is discrimination, as the person being asked to leave is being asked to leave because of a perception of their religion/beliefs, not because of anything they have actually said or done.
Diane Abbot - sure, as long as it's because of what she says/does, not because she's a woman/black.
Salman Rushdie - Absolutely. Again, as long as it's because of what he's said/done, not just cause he's of Persian decent.
Same with Nicola Sturgeon or anyone else who is considered a public figure.
TERF or trans, same as burka/niqab.