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Sigma Security Devices Limited
Sigma Security Devices Limited is a UK limited company, based in Ashford, incorporated in 1979. Has won 6 UK public-sector contracts worth £334k across 6 buyers, primarily Thames Valley Police and security & defence work.
Active contracts
5
no new awards in 30d
Contracted (12m)
£205k
new
Public buyers
6
stable this month
Top buyer share
49%
Thames Valley Police
Buyer concentration
Each block sized by share of total award value. A dominant block signals dependency on one buyer.
High concentration. Top 3 buyers = 90% of revenue.
Thames Valley Police
£165k
49%Metropolitan Police Service
£95k
28%Durham Constabulary
£40k
12%Hampshire Constabulary
£34k
10%Scottish Police Authority
—
0%Contracts won · 6 total · 5 active · 1 expired
Every contract award published under the Procurement Act.
| Title | Buyer | Award type | Value | Awarded | Status |
|---|---|---|---|---|---|
| Supply and Delivery of Method of Entry Equipment | Thames Valley Police | Direct contract | £165k | 16 Sept 2025 | active |
| Method of Entry | Metropolitan Police Service | Direct contract | £95k | 01 Feb 2021 | expired |
| Provision Of Method Of Entry Equipment | Durham Constabulary | Direct contract | £40k | 17 Nov 2025 | active |
| Method of entry/tactical breaching equipment | Hampshire Constabulary | Direct contract | £34k | 01 Apr 2023 | active |
| Public Order Requirements | Scottish Police Authority | Shared contract | — lot total · 3 suppliers | — | active |
| Supply and delivery of method of entry equipment | The Chief Constable of Thames Valley Police | Direct contract | — | — | active |