Ministry of Defence Contract Opportunity for REEF

Contracts Finder - Open Opportunities

Published March 23rd, 2026

Detected March 24th, 2026

Summary

The UK Ministry of Defence has published an open opportunity for a £1M contract related to countering uncrewed underwater vehicles, known as Project REEF. This joint US-UK initiative is being managed through the US DIU's Commercial Solutions Opening process, with a closing date for applications on April 3, 2026.

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What changed

The UK Ministry of Defence, through its Cyber and Specialist Operations Command's Innovation team (jHub), has announced an open opportunity for Project REEF. This £1M contract aims to counter uncrewed underwater vehicles and is a joint initiative with the United States, utilizing the US Defense Innovation Unit's (DIU) Commercial Solutions Opening (CSO) process. The opportunity is open to technology companies, with a closing date for submissions on April 3, 2026, and a contract start date of July 20, 2026.

Companies interested in fulfilling this contract must follow the application instructions provided via the DIU website. This notice represents a significant procurement effort in a sensitive defense technology area, requiring potential suppliers to engage with the specified US and UK innovation pathways. While the contract value is £1M, the strategic importance of countering uncrewed underwater vehicles suggests potential for follow-on opportunities or broader defense technology collaboration.

What to do next

Review Project REEF requirements and application process on the DIU website.
Submit proposals by the closing date of April 3, 2026, if aligned with company capabilities.
Note the contract start date of July 20, 2026, and end date of April 24, 2028.

Source document (simplified)

Published date: 23 March 2026

Open opportunity - This means that the contract is currently active, and the buying department is looking for potential suppliers to fulfil the contract.

Contract summary

Industry

Unmanned underwater vehicles - 35512400
Military electronic systems - 35700000

Location of contract

United States

Value of contract

£1,000,000

Procurement reference

Ministry of Defence - US DoW Joint

Published date

23 March 2026

Closing date

3 April 2026

Closing time

11:59pm

Contract start date

20 July 2026

Contract end date

24 April 2028

Contract type

Supply contract

Procedure type

Other: Commercial Solutions Openings (CSO)

Contract is suitable for SMEs?

Yes

Contract is suitable for VCSEs?

Description

The US and UK are pleased to announce a new bilateral Commercial Solutions Opening (CSO). Pj REEF is a joint US-UK project focused on countering uncrewed underwater vehicles, which will be delivered through the US DIU and its CSO process. For the UK, this project has been initiated by UK DI, and is being delivered through Cyber and Specialist Operations Command's Innovation team, the jHub.

https://www.diu.mil/work-with-us/submit-solution/PROJ00607