Keira Bell is suing the NHS trust where she was given gender reassignment treatment in her mid-teens

Children who believe they are transgender face new curbs on gender reassignment treatment to protect them from “irreversible” decisions.

Liz Truss, the trade secretary, told MPs that the wellbeing of under-18s was a key principle that would guide her response to a review of government policy on gender identity.

Ms Truss, who is also minister for women and equalities, said that analysis of feedback to a consultation on the future of the Gender Recognition Act was complete.

There had been speculation that Boris Johnson would abandon this work to avoid a row with activists but Ms Truss said she would announce changes before the summer, including restrictions on treatment for transgender children.

“Grown adults should be able to make decisions, to have agency to live