This is nonsense. We all know there's only 2 body types; one makes eggs, one makes sperm. 99.8% of every human ever born has been one or the other. No reputable biologist has ever said or proved otherwise. Pretending noone knows what we mean by 'sex' is just an attempt to overule material reality with the utterly nebulous and undefined idea of gender identity.
Lord Ormrod in the case of Corbett v Corbett was asked to interpret the law in terms of marriage. Some have argued that Ormrod was negligent in overlooking Sir Ewan Forbes 1968.
The ruling became less irrelevant since the introduction of the Sex Discrimination (Gender Reassignment) Regulations 1999, and completely irrelevant in law since the Same Sex Marriage, even less relevant after the Goodwin Case at the ECtHR, even less relevant after the Gender Recognition Act, less relevant still after the EqA 2010.
Yet here you are trying to maintain that this is the definition that counts. In law, it isn't.
BTW ... no one is two words, just like trans woman.