Caleo
ChatGPT says:-
Checking on the welfare of an adult son who isn’t communicating (UK):
If you believe he may be in immediate danger
Call 999 and ask for a welfare check by the police.
If you’re unsure whether it’s an emergency, call 999 anyway and explain the situation — the operator will decide.
If it’s non-urgent but you’re still worried
Call 101 (the police non-emergency number) and explain your concerns. They can still arrange a welfare check.
Contact his local Adult Social Services safeguarding team. Every council has one — you can report concerns about an adult at risk, especially if they are socially disabled or vulnerable.
Other support routes
If he has a GP or mental health/social care team, you can share your concerns with them.
Charities such as Mind, Rethink Mental Illness, or Carers UK can advise on what steps to take.
If he receives disability benefits (like PIP), the DWP may have links to local support networks.
For ongoing communication
Some people find texts, short notes, or online messages easier than phone calls.
If he has a support worker or neighbour, they may be a point of contact.
Do you want me to also add the direct links and phone numbers for Adult Social Services (if you tell me which local council area he’s in), so you can paste those in too?
Absolutely top advice. Its shouting, "mental health" issue on a number of fronts here.
I'd do two things.
1. Ring MIND for advice.
2. I would write to his GP, detailing your concerns, even tho you are not NoK you are close family
From your helpful long description I'd say he is showing aspects of self harm, this is a red flag:
if he has spoken of it in anyway at all (as in "life's not worth it", "whats the point of it all") then pass it on:
since he is on some kind of MH drugs there is clearly a basis for re-examining what drug interventions he is on and whether they are up to the job.
Problem is the GP cant generally comment on the letter as in "patient privacy", but since in the records you were listened to before, similar is likely.
I did intervene with an elderly friend twice who had expressed suicidal feelings and did get feedback from the GP because she knew me.
And what she said eventually is worth passing on: you can only take the horse to the water, you can make them drink.
ie, the only way eventually to reassure yourselves "we did all we can", but as others have said, its time to meet your own needs
All the very best.