HM Prison Service | RBLX #883169251
Game studiosENroleplayprisonsimulation
Description
His Majesty’s Prison Service Welcome to His Majesty’s Prison Service – the official Roblox prison roleplay experience inspired by the UK’s real HM Prison Service. Step into the shoes of a Prison Officer, climb the ranks, and help maintain order in our high-security facilities. We run a realistic progression system, from Trainee Officer to Director, with specialized units like C&R Response, K9 Units, and more. Prisoners, watch out – it’s up to our officers to keep the prison secure!
Written by the group; not a statement by this register.
Membership history
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Members | Change |
|---|---|---|
| 20 Aug 2026, 07:18 | 4 | first reading |
Ownership
Owned by Sinister (@CertifiedJakey) as measured.
Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.
Experiences
Experiences this group owns, by lifetime visits. Live-player counts are from our last measurement.
Members we’ve seen
Sinister (@CertifiedJakey) — Director (rank 255)
A sample — only members this register has independently measured, highest rank first. Not the full roster.
Rank structure
Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).
Related groups
Groups whose measured members overlap with this one — a sample from our membership graph.
Open data
Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)
Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.