UK | • Security Service #5631773
OtherENgovernmentintelligenceuk
Description
The Security Service, also known as MI5, is the United Kingdom's domestic counter-intelligence and security agency and is part of its intelligence machinery alongside the Secret Intelligence Service, Government Communications Headquarters, and Defence Intelligence.
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 We do not publish numbers we have not measured.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 |
|---|---|---|
| 3 Sept 2026, 04:53 | 1 | first reading |
Ownership
Owned by EUK (@UnitedKingdomAdmin) as measured.
Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.
Members we’ve seen
EUK (@UnitedKingdomAdmin) — Holder (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.