But for those who - I dunno - might have a tin-foil-helmet fear of opening up a government-entity website in case (I dunno) they have a fear of The Man taking control of their laptops....
....here's some of what the ONS paper (whose title is "What is the difference between sex and gender?"), last updated in Feb 2019 and still a live document - has to say about gender vs sex in a gender identity context:
The UK government defines sex as:
- referring to the biological aspects of an individual as determined by their anatomy, which is produced by their chromosomes, hormones and their interactions
- generally male or female
- something that is assigned at birth
The UK government defines gender as:
- a social construction relating to behaviours and attributes based on labels of masculinity and femininity; gender identity is a personal, internal perception of oneself and so the gender category someone identifies with may not match the sex they were assigned at birth
- where an individual may see themselves as a man, a woman, as having no gender, or as having a non-binary gender – where people identify as somewhere on a spectrum between man and woman
As I said, maybe the UK Government doesn't know what it's talking about with respect to gender identity, either........