Tavistock and Portman NHS Foundation Trust

The study by the Tavistock gender clinic shows all but one child was also later given cross-sex hormones.

Legal action has been launched against the NHS for prescribing the drugs to children.

A 14-year-old transgender boy is taking legal action against NHS England over treatment delays.

The UK's only children's NHS gender clinic is facing a legal challenge at London's High Court.

Some doctors felt children were referred for puberty blockers too quickly, it has emerged.

Leaked transcripts show staff say they were discouraged from raising concerns at NHS child gender clinic.

BBC News meets women reversing a gender transition and hears from experts concerned for this vulnerable group.

But questions remain over the use of puberty blockers, say Newsnight's Deb Cohen and Hannah Barnes.

Early findings of patients reporting thoughts of self-harm warranted investigation, Newsnight finds.