When was the last time a British government sat down with venture capitalists and bankers inside the Ministry of Defence to talk about economic growth? That happened on April 22, 2026, and almost nobody noticed.

The bet that could actually pay off for Britain

Defence Secretary John Healey and Chancellor Rachel Reeves convened the Defence Investors' Advisory Group, pulling together leaders from UK banking, venture capital and strategic finance to explore how private money can accelerate defence readiness.

I think this is one of the most economically serious things this government has done. Not because defence spending is magic, but because the incentive structure is finally pointing in the right direction.

The thesis is simple: 69% of UK Ministry of Defence private sector spend already goes to UK-based suppliers. That is not money leaking offshore. It is money circulating inside the domestic economy, funding engineers in Sheffield, software developers in Bristol, and supply chain workers in the West Midlands.

The numbers from EY are striking: proposed increases in defence spending could lift UK GDP by 0.8% and add £30 billion a year in economic output by 2045. That is not a rounding error. That is a structural shift in what the British economy produces.

The regional story that Westminster keeps ignoring

Here is what the London commentariat consistently misses. Around 70% of defence industry jobs sit outside London and the South East, concentrated in regional manufacturing heartlands like the West Midlands, South West and North East.

I grew up watching post-industrial towns in the North slowly hollow out as manufacturing contracts went elsewhere. A £50 million Defence Growth Deal for South Yorkshire, announced in April 2026, supporting 3,200 existing defence jobs and expanding cutting-edge research at the University of Sheffield — that is not a press release. That is a real incentive structure.

“In a more dangerous world, our national security is the guarantor of our economic security and investment confidence. A strong UK economy needs strong UK defence.”

— John Healey, UK Defence Secretary, April 22 2026

The defence industry already supports 272,000 jobs, with 50,000 more expected by 2035. Defence exports hit a 40-year high of £20 billion in 2025. These are not projections from a think tank. These are the actual numbers from the sector right now.

The critics have a point, but they are drawing the wrong conclusion

The strongest opposing argument is this: defence spending squeezes other budgets. The Institute for Fiscal Studies is right that existing plans to reach 2.6% of GDP by 2027 will leave non-defence departmental spending nearly flat between 2026 and 2028.

That is a real tension. I do not dismiss it. But the critics who use this to argue against the whole defence-as-growth strategy are making a category error. The question is not whether to spend more on defence. The question is whether that spending is structured to maximise domestic economic return.

The new Defence Finance Zig-Zag secondment programme, which embeds private sector experts inside the Ministry of Defence, is a genuinely smart structural fix. Procurement has been the graveyard of British defence ambition for decades. Putting bankers and venture capitalists inside the building is the right answer.

Where the government still needs to be braver

Here is the bad edge, and I will be direct about it: only 4% of Ministry of Defence expenditure currently goes to SMEs. That is a scandal. The innovation that will define the next generation of defence capability is sitting in small startups, not in the legacy primes.

BAE Systems reported a record order backlog of £83 billion this year. That sounds impressive until you realise it also signals a capacity ceiling. The pipeline is full but the factory floor cannot keep up.

The government's Modern Industrial Strategy has placed defence front and centre as one of eight key growth sectors. That framing is correct and overdue. But strategy documents mean nothing without procurement reform that actually opens the door to the 12,000 UK SMEs already working in defence and national security.

The spending plans set out in the 2025 Spending Review show defence rising from £62.2 billion in 2025/26 to £73.5 billion in 2028/29, an annual real-terms growth rate of 3.8%. That trajectory is real. The question is whether the institutional machinery can absorb it productively.

The growth bet Britain cannot afford to lose

The broader economic context makes this bet more urgent, not less. The EY ITEM Club forecasts UK GDP growth of just 0.9% in 2026. Business investment is contracting. Private sector confidence is weak.

In that environment, defence spending is one of the few levers that is simultaneously politically viable, economically productive, and geopolitically necessary. The critics who frame this purely as a security cost are missing the economic architecture being built underneath it.

Tell me: would you rather the government kept the money in Treasury headroom while manufacturing towns continued to hollow out?