I also really want to explore this when I've got more time. You make a good point Pencils. I think there are definitely several legal points to challenge.
The intention of the original act was also to allow for transsexuals to marry, so there may be an argument that the act should have been repealed on the introduction of civil partnerships.
Also, from the Scottish consultation:
"3.08. In 2006, the non-binding Yogyakarta Principles were agreed by a wide-ranging group of human rights law experts, representatives of nongovernmental organisations and others. They set out existing international human rights law and principles, as the authors believe they should be applied to the treatment of lesbian, gay, bisexual and transgender people. Principle 3 asks countries to:
“take all necessary … measures to ensure that procedures exist whereby all State-issued identity papers which indicate a person’s gender/sex including birth certificates … reflect the person’s profound self-defined gender identity” and to “ensure that such procedures are efficient, fair and non-discriminatory, and respect the dignity and privacy of the person concerned”.
3.09. In 2015, Resolution 2048 of the Parliamentary Assembly of the Council of Europe (Resolution 2048) expressed concerns that requiring someone seeking legal recognition of their acquired gender to have been medically treated or diagnosed is a breach of their right to respect for their private life under Article 8 of the ECHR. The resolution calls on all Member States to:
“develop quick, transparent and accessible procedures, based on selfdetermination, for changing the name and registered sex of transgender people on birth certificates, identity cards … and other similar documents”.
3.10. The view of the Scottish Government is that the 2004 Act requirements are unnecessarily intrusive and do not reflect the best practice now embodied in the Yogyakarta Principles and Resolution 2048."
So there is no case law for the proposed law changes under Article 8 of the ECHR, just some 'concerns'. No court decision or EU directive.
Article 8 says:
"1. Everyone has the right to respect for his private and family life, his home and his correspondence.
- There shall be no interference by a public authority with the exercise of this right except such as is in accordance with the law and is necessary in a democratic society in the interests of national security, public safety or the economic well-being of the country, for the prevention of disorder or crime, for the protection of health or morals, or for the protection of the rights and freedoms of others."
I could make a case to legally challenge the GRA on the basis of every point made there - protection of children's health, rights and freedoms of women being curtailed, national security of document change, and so on.
Was the original 2004 Act based on an ECHR case? If so, can this be appealed/judicial review? At a very basic premise we have legislation that states humans can change sex - this is factually incorrect.
I'll come back to this...