Have you thought about going into a charity shop or so and asking? What about something like bar work? How are you finding the volunteering positions? I've had a quick look and have seen a fair few....
http://www.band.org.uk/
https://www.boltoncvs.org.uk/
https://www.indeed.co.uk/Volunteer-jobs-in-Bolton
https://www.ageuk.org.uk/bolton/get-involved/volunteer/
Or the recovery college to get some more qualifications/experience https://www.gmmh.nhs.uk/recovery
What about any of that?