Hundreds of children aged six and under were sent to a controversial NHS gender clinic over the last decade.
Some 382 youngsters referred to the Gender Identity Development Service included 12 aged three and 61 four-year-olds, it was reported.
The service, run by the Tavistock and Portman NHS Trust in North London, is no longer taking referrals after NHS England said it would close.
The trust said no three-year-olds would have been treated, with staff holding a “one-off discussion” with parents to provide support.
Campaigners said the children should never have gone. Ex-health minister Jackie Doyle-Price said it was wrong to medicalise “just growing up”.
Controversially, it used puberty blockers.
The Tavistock said: “Gender identity development in younger prepubertal young people is uncertain and so ‘treatment’ is not provided.”
