R0wantrees that post was exactly what I was thinking of when I was making the point above.
I've just done a touch of googling and I think we have a gap in the law that really needs looking at and perhaps should be a valid aim for campaigners in terms of safeguarding.
There seems to be a term called 'circumvention tourism' which appears to have been first coined in 2012 by Glenn Cohen. (paper is googlable)
It refers to going abroad for medical procedures which are illegal or unavailable in the country where someone is resident. It includes everything from going abroad for an abortion, to fgm, to assisted suicide, to experimental treatment and beyond.
And there seems to be a particular gap in the law when it comes to minors - which I speculate - might well be covered by other laws depending on the situation.
During the course of my googling I came across this case of a 4 year old who was taken abroad to China for stem cell treatment for autism, which was basically quackery. The parents were desperate but ended up feeling the 'treatment' was almost abuse and left £20,000 out of pocket. And that seems to be where the articles focus was. Not on the harm to the child or the parents told disregard for safeguarding their child before leaving the UK.
www.imtj.com/blog/stem-cell-therapies-show-medical-tourisms-darker-side/
Then I came across this legal blog which focuses on the ethics and legalities of travelling abroad with a minor for medical treatment. It actually mentions a trans gender child (though focuses on a 4 year old) but it strongly suggests there might well be a bit of an issue in the case of a 12 year old.
blog.practicalethics.ox.ac.uk/2017/07/medical-tourism-for-controversial-treatment-options/
And I note the following paragraph:
The key question is whether doctors feel that there is a risk of significant harm from the proposed treatment (or from forgoing treatment currently being provided in the UK). Professional bodies, such as the GMC, require doctors to notify child protection agencies if they suspect risk of harm, even if not certain.
So perhaps the way to go, might be to persuade discussion of the law on circumvention tourism generally.
And more specifically ask questions about why, no one was raising questions with child protection services over a 12 year old boy going abroad without courts being involved and a proper discussion going on about what was in the best interests of that child by social services.
It does not ban parents taking their children oversea for medical procedures etc, but it would oblige better scrutiny of such actions. And it goes past the trans argument.
Of course, if our state institutelion go full on woke then this would scupper this new law. But then you'd still have to ask why you'd have to go abroad for such a medical intervention rather than stick to services that are properly vetted in the UK. And that's important anyway.
This asks all the right questions about competence, the child's best interests, and undue pressure.
Discussion of circumvention tourism really does seem a valid topic for public debate, and frankly yes the example of Susie Green is an absolutely perfect one for public consumption.
Susie Green can not argue with this, because from her own admission and comments publicly available she was well aware of the ethical problems and potentially that that there was a legal issue regarding child protection.
These things are always worth looking at from an angle, and I think the case of the couple going to China for the autism quackery also suggests this is a growing issue and problem which perhaps needs some sunlight shining on it as there seem to be real dangers involving, often desparate and vulnerable parents.