What is he eating? Food intolerances can cause many issues, especially sugars and carbohydrates. They can exacerbate behavioural issues. I would look into this too. There is a YouTube film called ‘The Magic Pill’. It is well worth watching. I wish I had known this when my son was younger! Good luck.
Estranged Son and Future Granddaughter
To think that London, or anywhere else for that matter, does not belong to any one demographic