Young adult men, same road name as Belmarsh
HMP/YOI Isis holds young adult men (the public description is a Category C trainer / YOI hybrid) on the Belmarsh site at Western Way, Thamesmead. It was built to take pressure off Feltham and the London locals for the 18–30 group. It is still a closed prison with a full search at the gate.
Education and workshops are the official story. Your story as a visitor is booking the Isis desk, not the Belmarsh PACT number you found on a forum.
Locator first
Find a prisoner on GOV.UK. If the result says Isis, do not present at Belmarsh. If it says Belmarsh, do not present at Isis. The campus layout punishes guesswork.
Visits
Use GOV.UK’s Isis guidance and the national prison-visits service. We have not copied a slot grid here because we did not treat an unofficial source as good enough. Recheck official times before you travel. ID rules match the rest of the London estate.
Thamesmead campus
Abbey Wood station, then buses into Thamesmead. Western Way is shared wording on envelopes for more than one prison. Read the establishment name on your booking confirmation out loud before you get in the taxi.
Questions about HMP/YOI Isis
- Is Isis the same as Feltham?
- No. Feltham is the west London YOI / prison in East Bedfont. Isis is the Thamesmead young-men prison beside Belmarsh.