Breaking down your post a bit more...
moved in Sept to a village school
We did similar. Tbh, it took a year for him to settle. Big fish/small pond. It took a long time for the rest of the class to accept this ‘unusual’ new boy. Now that they do, he’s thriving. If you trust school (though not sure if you should tbh), stick with it. If not, start looking for alternatives, but go prepped with what they can help with.
What would you recommend for a child who gets easily wound up
Training for staff. 1-2-1 TA. Sensory breaks. Visual timetable. Same seat every day (near back of room so he can see everything - no need to turn around/ reduces anxiety)
his desk is in a corridor, they hold him still when a group goes past because it winds him up but he hates being held so it winds him up more.
Ditch this. Right now.
He's seen the OT who's recommended lots of sensory stuff.
Loads of it then. LOADS. Lots of sensory breaks.
He hardly ever goes in the classroom but we think they give up on trying.
Go with him when noone’s there. Get him to explain it to you/trusted adult. What does he know/understand in there? What worries him? Where would he be happy working?
He's very anxious especially around noises/busyness.
Visual timetable. Early/late lunch. Quiet space for breaks.
They keep excluding him (and they don't record properly what happens to cause his outbursts so we don't really know but we think it's busyness, noise, cumulative effect of these but mainly being held by staff)
Record. Record. Record. You make a record if they don’t. Ask him and put as much detail in as possible.
So if you were SENCO what would you be asking for?
Support from local specialist teacher. Support from CAMHS.
It sounds awful tbh. I really hope you get it sorted. I’m surprised there’s no specialist provider nearby. I live rurally and there are several places I know of. Want to pm me (or share here) the first part of your post code and I’ll see what I can turn up?