The UK Government continues to fight the registration of people who identify as neither male nor female. Some people are intersex and biologically indistinguishable as male or female and wish to not be identified a male or female. Other people may consider that their gender does not reflect being classified a male or female and wish to be consider socially as neuter.
The campaigner Christie Elan-Cane has spent over twenty years trying to get the British Government to allow them to have a passport marked X (not male or female): also to have their other documents reflect their perceived neuter status. Recently their petition was turned down but they have now been granted a Right of Appeal against the High Court’s findings.
This will affect dual citizens of Australia who are also citizen of the British Isles who may also hold a UK passport. It will also affect Australians who have an X in their passport who visit the UK. Australians have the right to choose X on their passport if they do not identify as male or female but if they then visit the UK their passport would not be honored unless the UK law is changed.