Puberty blockers as a treatment for gender incongruence or dysphoria are currently only available for people under the age of 18 as part of an approved clinical trial. NHS England has also paused prescribing cross-sex hormones for people under 18. This briefing summarises the policy position on the use of hormone treatments ahead of a debate in the Lords on the appropriate age of consent.
https://lordslibrary.parliament.uk/hormone-treatments-and-age-consent-government-policy/
I think these is a thread about the Conversion Practices Bill but thought this was interesting on its own.