Just reading this interesting debate between Kathleen Stock and Robin White in Prospect magazine.
www.prospectmagazine.co.uk/essays/gender-wars-two-opposing-perspectives-on-the-trans-and-womens-rights-debate
This line just screamed at me "For good practical reasons, the UK passport office will allow individuals to change their gender in their passport long before they can make an application for the GRC required to change their legal sex". This I did not know?! What ARE the good practical reasons? Travelling abroad for surgery?