JOSCAR Buying Community
- A&P
- AirTanker
- Atkins
- Atlas Elektronik
- Aquila
- Babcock International
- BAE Systems
- Boeing
- Cammell Laird
- Chemring Countermeasures
- Draken
- Elbit Systems UK Limited
- General Dynamics UK
- Leidos UK
- Leonardo in the UK
- Lockheed Martin
- MBDA Systems
- Ministry of Defence
- NATS
- QinetiQ Group PLC
- Raytheon UK
- Roke Manor
- Rolls Royce Submarines
- RUK
