UK Rules Out Buying Foreign Off‑the‑Shelf Defence Systems, Prioritizes Co‑Development with Allies

LONDON, 19 November – The UK government will not fund commercial off‑the‑shelf (COTS) defence purchases from foreign suppliers, a senior Ministry of Defence official said at a London conference. James Gavin, deputy director of UK Defence Innovation and head of technology transition at the National Armaments Directorate (NAD), added that the UK will continue to co‑invest and co‑develop capabilities with allies. A detailed cost breakdown of priority programmes will be released in the forthcoming Defence Investment Plan before the end of November 2025.

Policy Stance: No Foreign Off‑the‑Shelf Buys

Speaking at the Future Armoured Vehicles Survivability conference in London on 19 November, Gavin made the policy clear. “I will not be funding something abroad which is bought off the shelf,” he stated with conviction, “full stop.”

Gavin said activity with foreign suppliers must benefit the UK economy through jobs and align with the Defence Industrial Strategy introduced in early September, which emphasized industrial participation and economic returns for the UK.

Collaboration, Not Isolation

While drawing a line under foreign COTS purchases, Gavin stressed that the UK will not disengage from international defence innovation or allied cooperation. In response to a question from Army Technology, he said: “Certainly, the UK and European countries can’t all afford to invest in everything in [research and development] that eventually results in their viable products,” the NAD official contended.

He underscored the need for targeted partnerships and joint programmes: “We’ve got to spread out and co-invest with core partners,” he granted, citing strategic frameworks such as the trilateral AUKUS pact and the Trinity House Agreement with Germany. Gavin also hinted at broader collaboration ahead, referencing “a big intent to do similar [technology partnerships] with Nato in certain [unspecified] areas.”

Budget Pressures Driving the Approach

The emphasis on co‑investment is set against a tight fiscal backdrop. Two years ago, the UK reported its largest ever deficit in the annual Equipment Plan, a shortfall just shy of £17bn ($22.2bn). The Defence Industrial Strategy’s offset policy and focus on domestic economic benefit reflect efforts to manage this gap while maintaining capability growth.

Context: UK’s Existing Off‑the‑Shelf Platforms

Despite the new stance, the UK currently operates several major platforms acquired off the shelf from overseas, many of them US‑made. These include:

• Boeing P‑8A Poseidon maritime patrol aircraft
• Apache AH‑64E attack helicopters
• MQ‑9B Protector drones
• Swedish Archer 155mm howitzers, rapidly procured to replace AS‑90s

The latest position signals a shift from those past procurement choices toward co‑development, joint procurement, and domestic industrial participation, rather than straightforward off‑the‑shelf purchases from abroad.

What’s Next: Defence Investment Plan

The Ministry of Defence will publish a cost breakdown of priority defence programmes in the Defence Investment Plan before the end of November 2025. This plan is expected to outline spending priorities, timelines, and industrial participation mechanisms aligned with the Defence Industrial Strategy’s goals.

Key Takeaways

• No UK funding for foreign off‑the‑shelf defence systems, per the NAD’s James Gavin.
• Policy remains open to joint development and co‑investment with allies (e.g., AUKUS, Trinity House Agreement).
• Largest Equipment Plan deficit of approximately £17bn ($22.2bn) frames the fiscal context.
• Defence Investment Plan due by end‑November 2025 with detailed programme costs.

Conclusion

The UK is tightening its defence procurement policy to prioritize domestic economic benefit and allied co‑development over foreign COTS buys. With a significant equipment funding shortfall and a new industrial strategy in place, attention now turns to the Defence Investment Plan due before the end of November 2025, which will clarify programme costs and the future balance of UK‑ally defence collaboration.