‘A 23-year-old woman who is taking legal action against an NHS gender clinic says she should have been challenged more by medical staff over her decision to transition to a male as a teenager.
A judge gave the go-ahead for a full hearing of the case against the Tavistock and Portman NHS Trust.
Lawyers will argue children cannot give informed consent to treatment delaying puberty or helping them to transition.
The Tavistock said it always took a cautious approach to treatment.
Gender identity charity Mermaids said that people face a long wait for access to such services, that they can save lives and that very few people regret their decision.
The clinic based in Hampstead, north-west London, which runs the UK’s only gender-identity development service (GIDS), added that it welcomed an examination of the evidence in this contentious area.
Keira Bell is one of the claimants and will give evidence in the judicial review, which is likely to be heard in early summer.
The second claimant, known only as Mum A, is the mother of a 15-year-old girl with autism, who is awaiting treatment at the clinic.
Keira describes being a tomboy as a child. When asked how strongly she felt the need to change her gender identity, she replied that it gradually built up as she found out more about transitioning online.
Then as she went down the medical route, she said “one step led to another”.