Maya Forstater lost her job for tweeting, quite correctly, that you can't change your biological sex no matter how much you want to identify as anything else - she has won her appeal though.
Rightly so. That quote above was from the ONS’s policy on the subject:
https://www.ons.gov.uk/economy/envir...der/2019-02-21
Sex and gender are different concepts that are often used interchangeably. The UK government refers to sex as being biologically defined, and gender as a social construct that is an internal sense of self, whether an individual sees themselves as a man or a woman, or another gender identity. They encompass many different identities and may be non-binary (that is, not a man or a woman).