The controversial High Court judgment in the UK declaring children under 16 diagnosed with gender dysphoria lack Gillick competency to consent to puberty blocker treatment has been thrown out.

A legal challenge was launched against the Tavistock gender clinic in London by Keira Bell, who started taking puberty blockers as a teenager before having a double mastectomy four years later.

She subsequently decided to detransition and, in 2019, applied to the UK High Court for a declaration that under-16s should not be prescribed puberty blockers without a court assessment of their competency.

The High Court judges agreed, declaring last year that the treatment was largely experimental with little known about its long-term side effects.