At a glance · for buyers and watchdogs
Cook Defence Systems has won £228.2m across 3 public-sector buyers, with 5 live contracts. No active Companies House risk flags.
Why: top buyer Ministry of Defence, DIO, at 70% · 0 active risk flags · 0 modifications.
ESG & policies vault · 0/5
Key governance & sustainability policies. Published documents link out; missing ones are greyed.
Capabilities
What this supplier does, where they sit, who they sell to.
Extracted automatically from william-cook.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.
Case studies · 2
Delivery stories from the supplier’s website. Clients are not yet cross-checked against award records.
Extracted automatically from william-cook.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.
Buyer references
Named public-sector contacts who have agreed to act as a reference.
No buyer references yet
Public-sector buyers can confirm they'll act as a reference for this supplier. Confirmed references — with the contract they relate to — show here.
Accreditations & memberships · 3
Credentials listed on the supplier’s website. Not yet checked against issuer registers.
Extracted automatically from william-cook.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.
KPI performance
Delivery, budget and satisfaction scores reported quarterly by buyers.
No verified KPI scores yet
Once buyers report contract KPIs — delivery on time, on budget, satisfaction, adoption and accessibility — a weighted grade and breakdown appear here.
Contracts · 5 live · 5 historic
Pulled from Contracts Finder & Find a Tender. Most recent first.
| Title | Buyer | CPV | Awarded | Value | Term | Status |
|---|---|---|---|---|---|---|
| Ministry of Defence, DIO, | 35400000 | 06 Jun 2025 | £125.0m | 2 yrs | Live | |
| Ministry of Defence, DIO, | 35400000 | 29 Apr 2022 | £34.9m | 3.9 yrs | Closed | |
| BABCOCK INTERNATIONAL GROUP PLC | 35400000 | 29 Apr 2022 | £34.9m | 3.9 yrs | Closed | |
| BABCOCK INTERNATIONAL GROUP PLC | 35420000 | 03 Apr 2020 | £32.4m | 12 mo | Closed | |
| Ministry of Defence, DIO, | 35000000 | 27 May 2018 | £113k | 1 mo | Closed | |
| BABCOCK INTERNATIONAL GROUP PLC | 35420000 | 14 Jun 2017 | £906k | 5 yrs | Closed | |
| Ministry of Defence, DIO, | — | — | — | — | Live | |
| Ministry of Defence, DIO, | — | — | — | — | Live | |
| Babcock Land Defence Limited | — | — | — | — | Live | |
| Ministry of Defence, DIO, | 35410000 | — | — | — | Live |
Top buyers · 3 buyers · top 3 = 100%
Share of awarded value. Concentration fires above 40% for any single buyer.
Geography
Distribution of awarded value by buyer region.
Peers
Suppliers with overlapping CPVs & buyers (last 24m). Cook Defence Systems highlighted.
| Supplier | SME? | Awarded · 24m | Contracts |
|---|---|---|---|
| No | £1.1bn | 1 | |
| No | £109.6m | 1 | |
| No | £24.4m | 2 | |
| No | £24.0m | 1 | |
| No | £19.8m | 1 | |
CD Cook Defence Systems | No | — | — |
Red flags · 0 active
Automated scan of Companies House status, charges and insolvency records.
Compliance scorecard
Derived from Companies House filings — not a full supplier-assurance check.
Modifications
Variations to awarded contracts logged under Procurement Act 2023 s.74.
No modifications recorded
No published contract variations for this supplier. Modification notices appear here as they are issued under the Procurement Act 2023.
News mentions
UK trade press & nationals, matched to this supplier.
No news mentions found
We haven't matched any recent UK press coverage to this supplier. Mentions appear here automatically as they're published.
Companies House
Live sync — registered details, directors, PSC and SIC codes.
Registered details
- Company no.
- 06792266
- Status
- Active
- Type
- Private limited
- Incorporated
- 15 Jan 2009
- Reg. office
- C/O William Cook Holdings Ltd, Parkway Avenue, Sheffield, South Yorkshire, S9 4UL
- SIC codes
- 46140 · 84220
- Last accounts
- 28 Jun 2025
- Next accounts due
- 29 Mar 2027
Directors & PSC
- ROSS, Philip John — secretaryAppointed 26 Jul 2024
- SEYMOUR, Christopher David — directorAppointed 15 Jul 2016
- COOK, William James — directorAppointed 18 Jul 2013
- William Cook Holdings Limited — person with significant controlownership of shares 75 to 100 percent · voting rights 75 to 100 percent · right to appoint and remove directors
Financial
Filed accounts from Companies House.
No financial filings on record
Turnover, profit and headcount appear here once audited or micro-entity accounts are filed at Companies House.
Org tree
Group structure and ownership.
Independent. No parent company or subsidiaries recorded at Companies House for this entity.
Social value
Commitments mapped to the Government Social Value Model themes.
No social-value commitments yet
Jobs, skills, environmental, inequality and community commitments appear here once a claimed supplier attributes them to awarded contracts, or once we detect them on the supplier’s website.