@MumSkull83 massive squishes. Been in similar situation and as @user1484492781 said - looking back I’m not sure what I could have done differently.
I begged and hounded the police, social services, GPs, MPs and every legal/drug/family agency I could.. nothing.
I had evidence of dealers, money laundering they were trying to involve him in etc - police weren’t interested. I had screenshots, names, details.. nothing.
I had to kick him out at 16 for my own safety and because of the trouble/ people associated with him was bringing to my doorstep.
Hes 24 now and whilst the first 2 years after kicking him out were awful he’s got himself sorted now.
I always let him now I loved him. But that I couldn’t be involved or around him and drugs/crime.
I think my son wanted to be popular and followed the peers he had and wanted to fit in so copied what they got up to. He has Asperger’s (no excuse) and he’s always mimicked the behaviour of any given group he was in. It started with weed. Then ‘occasional’ ket/coke/party drugs etc.
Like I said. Given the time over I still don’t know what I could have done. We had boundaries/family rules and meetings and open communication prior to him going off the rails. We had hobby groups and interests he was into and we supported.
we tried talks/consequences (no money/phone/lifts etc etc) nothing worked. Tried grounding him. But difficult to stop someone sneaking out if determined enough when you are asleep/climbing out windows and one memorable time - hoisting patio door off track… and at over 6’ 2” it’s pretty intimidating trying to stop an enraged youth.
he stayed in a special unit for homeless or at risk young people which had support workers etc to help them with benefits/work/education and any substance issues. I think it really helped him. You can find yours via Google/local Facebook or the council will know of some. Try and get details for a young people’s one. The adult one he had to stay in for a week prior to his young people’s placement was so bloody scary when I visited. https://england.shelter.org.uk/housing_advice/homelessness/emergency_options_for_homeless_16_to_25_year_olds