Im confused
If the concern is about "invisible" children
Then that's not the same as a concern about home educated children.
Just like most schooled children will go to GP, dentist, optician, friends, clubs etc so will most home ed kids.
So why then would the solution be an annual visit for home educated families? How would that prevent abuse or help abuse being recognised? We all know its easy to cover up abuse.
If the concern is no professionals are seeig children then wouldn't the solution be to ensure a professional has seen the child?
We already have a list of children, through birth registry and visas etc, we can just check which of those children hasn't been seen by a GP, optician, dentist, club leader , tutor etc in the past year.
This would just involve a letter to ask what professionals the child has seen and confirmation of that visit.
Why would it involve unqualified non professionals visiting?
Thats like having a random person turn up at a school once a year to check if there's any safegaurding concerns the teachers have missed and expect to spot them in an hour.