"Gender reassignment is a protected characteristic now, the Tories changed the Equality Act"
On a point of order, the Equality Act was a 2005 Labour manifesto commitment and was passed by said Labour government in April 2010.
The intent of the Act was clarified prior to it passing.
publications.parliament.uk/pa/cm200809/cmpublic/equality/090611/pm/90611s04.htm
"The explanatory notes state that a person who was “born physically female” and decides to live as a man, “starts and continues to live as a man”, with no medical intervention at all—just passes as a man—will have undergone gender reassignment. He will have started that process by proposing to do it in the first place, and will have continued it, but if he had started it—had proposed it, but withdrawn—he would still have been covered while he was proposing it."
So basically anyone who even thinks about being trans or non-binary is covered.
The Equality Act has a long list of exceptions:
www.legislation.gov.uk/ukpga/2010/15/schedule/3
"A person does not contravene section 29, so far as relating to gender reassignment discrimination, only because of anything done in relation to a matter within sub-paragraph (2) if the conduct in question is a proportionate means of achieving a legitimate aim.
(2)The matters are—
(a)the provision of separate services for persons of each sex;
(b)the provision of separate services differently for persons of each sex;
(c)the provision of a service only to persons of one sex."