The two parents, named only as TP and CP, already had a seven-year-old biological child who had changed their gender from boy to girl just months earlier.

The parents said they had supported their seven-year-old child's transition, going as far as to change their legal status to that of a girl, including ordering a new passport matching the child's new identity.

When the three-year-old turned four and was sent to school, he was sent in wearing a girl's uniform despite the school "expressly asking" the parents to stop him doing so.

The investigation came after concerns arose that the parents were "actively encouraging" the children to change genders and had "manipulated" them.