Glorianny
CRUK think transmen and non-binary people are discriminated against
news.cancerresearchuk.org/2021/05/18/research-shows-one-size-doesnt-fit-all-for-cervical-screening-in-the-trans-and-non-binary-community/
'According to Stonewall' they are discriminated against. They don't have the last word either, particularly now.
If someone is born female they know, assuming that they are able to organise transition to transmale, that they have a cervix. They are, therefore able to ask for a smear test if their records list them as male (which would be foolish, both on their own part and on that of their doctors, but still). If they have organised things so that they are not routinely called for women's health screening and do not ask for one separately, the fact that they don't get one is not discriminatory. It is their own irresponsibility.
If, OTOH, a woman who does not identify as a man has English as a second language, doesn't know what 'cervix-haver' means and misses out because of this, she is being discriminated against.

