“In adopting this approach, the Labour Party has verified that it is acting consistently with both the letter and spirit of the relevant legislation, the Equality Act 2010.”
This is false. What they are doing is not legal. Here is the EA exception that makes AWS legal. The relevant wording is:
6)Selection arrangements do not include short-listing only such persons as have a particular protected characteristic.
I.e. it's not legal to have a shortlist made up of people who share a single protected characteristic ...
(7)But subsection (6) does not apply to the protected characteristic of sex;
Unless the protected characteristic is sex.
That means an AWS can be open to women + tw with a GRC (who are legally female). Self-ID's tw do not share the protected characteristic of sex with women, they remain legally male.
Labour are reinterpreting 'sex' to mean 'self-ID'd gender identity' and if they get away with it here, in this specific and unambiguous exception, then every other instance of the word 'sex' in the EA can be interpreted the same way.
Sex as a protected characteristic will no longer have any meaning. We will no longer have any sex based rights.