Has anyone seen this:
www.gendergp.com/raising-a-trans-teen-podcast/
A quick synopsis is that Arthur first identified as male when they were six to seven years old. They did this by drawing a man and a woman then stating they weren't the "girl" but couldn't be the other and it couldn't be put right. Mum assured him it could.
Arthur had his first appointment with the Tavistock at seven and a half and after what Mum describes as "a battle" were prescribed puberty blockers at nine and a half (supposedly the youngest person to be prescribed by the Tavistock)
At about the same time Arthur, still nine years old, went to a Mermaids residential (presumably with Mum) where they met Helen Webberley and many older trans people. He left the residential constantly asking his mother "Have you rung GenderGP? Have you rung Norman Spack? When are we going to America?"
At some point, it's unclear when but Arthur was between ten and thirteen years of age, their relationship with the Tavistock broke down. The Tavistock had sent a letter saying that Arthur was too young to be making these massive decisions presumably in response to Arthur's request for testosterone. This led to a private appointment(s) being made with GenderGP where Arthur got his required medications put in place.