The Farnborough International Airshow has long been a showcase for aerospace engineering and diplomatic theatre. This year’s event, however, carried a noticeably different atmosphere.

Against the backdrop of heightened geopolitical tensions, accelerating defence budgets across Europe and a rapidly evolving technological race, Defence Secretary Wes Streeting used his keynote address at the Aerospace Global Forum Defence Summit to argue that Britain’s security will increasingly depend as much upon industrial competitiveness and artificial intelligence as traditional military strength.

His speech amounted to more than an endorsement of Britain’s defence sector. It was an attempt to redefine defence policy as industrial policy.

Streeting repeatedly returned to the idea that military capability can no longer be separated from economic resilience. In a world where supply chains have become strategic assets and production capacity determines wartime endurance, the ability to manufacture sophisticated equipment quickly may prove just as important as possessing it in the first place.

The argument reflects lessons drawn from both Ukraine and the Middle East. Modern conflicts have demonstrated that prolonged warfare consumes munitions, drones and replacement systems at a pace few Western governments anticipated. Industrial capacity, once dismissed as an efficiency problem for accountants, has re-emerged as a central component of deterrence itself.

The Defence Secretary’s emphasis on artificial intelligence illustrates how profoundly military priorities are changing. Rather than presenting AI simply as another procurement programme, Streeting portrayed it as the enabling technology underpinning everything from logistics and intelligence to autonomous systems and future combat aircraft.

That message coincided with the announcement of a £708 million extension to BAE Systems’ work on the Global Combat Air Programme (GCAP), Britain’s flagship sixth-generation fighter project involving Italy and Japan. The programme increasingly centres not merely on a manned aircraft but on an integrated network capable of directing autonomous drones and processing enormous volumes of battlefield data.

For investors, this reinforces an important structural trend.

The defence sector is no longer dominated solely by established prime contractors. Software developers, AI specialists, cyber-security firms and autonomous systems manufacturers are becoming integral parts of military procurement. European governments are beginning to recognise that future military superiority will depend on technological ecosystems rather than individual weapons platforms.

Streeting’s insistence that Britain must “match the speed” of adversaries developing AI technologies reflects this changing reality. It also acknowledges an uncomfortable truth: conventional procurement systems remain poorly suited to software-driven innovation.

The Ministry of Defence has frequently been criticised for programmes characterised by lengthy development cycles and escalating costs. Artificial intelligence evolves in months rather than decades. If procurement cannot adapt, governments risk purchasing technologies already approaching obsolescence.

This explains the growing emphasis on partnerships with industry.

Streeting’s speech repeatedly highlighted cooperation between government and manufacturers, suggesting the state increasingly views defence companies not merely as contractors but as strategic partners in national resilience.

The economic implications extend well beyond defence itself.

Britain’s aerospace sector remains one of the country’s most internationally competitive manufacturing industries, supporting tens of thousands of highly skilled jobs while generating substantial export revenues. Presenting defence investment as an engine of economic growth therefore serves both fiscal and political objectives.

Yet translating rhetoric into delivery remains the greater challenge.

Successive British governments have announced ambitious defence reviews only to encounter budgetary pressures that delayed procurement, reduced fleet sizes or stretched delivery schedules. The credibility of the latest strategy will depend less upon speeches than sustained financial commitments over many years.

That question becomes particularly acute given the broader fiscal environment. Defence spending now competes not only with healthcare, education and welfare but also with growing demands for infrastructure investment and energy transition programmes.

Streeting attempted to avoid presenting these priorities as mutually exclusive. Instead, he framed defence expenditure as productive investment capable of strengthening manufacturing, regional employment and technological innovation simultaneously.

The approach mirrors broader trends emerging across Europe.

Germany, Poland and several Nordic countries increasingly justify military expenditure not simply through security concerns but as part of wider industrial strategies designed to strengthen advanced manufacturing and technological sovereignty.

Britain appears eager to position itself within this movement.

Farnborough itself illustrated how defence has assumed unprecedented prominence. Roughly half of the show’s 1,600 exhibitors represent defence-related industries, reflecting the sector’s expanding economic significance amid continuing geopolitical instability.

Nevertheless, important questions remain unanswered.

Can Britain genuinely accelerate procurement sufficiently to keep pace with rapidly evolving technologies? Will smaller technology companies gain meaningful access to defence contracts traditionally dominated by large incumbents? And can government reconcile demands for greater domestic production with increasingly international defence supply chains?

Streeting offered direction rather than detailed solutions.

His speech outlined a strategic vision in which military capability, industrial competitiveness and technological innovation become mutually reinforcing. Whether Whitehall possesses the institutional agility to implement that vision remains uncertain.

Yet the broader diagnosis appears difficult to dispute.

Russia’s war in Ukraine, instability across the Middle East and intensifying strategic competition between major powers have fundamentally altered assumptions underpinning Western defence planning. Governments increasingly recognise that deterrence depends not simply upon possessing advanced weapons but upon sustaining the industrial ecosystems capable of producing them continuously.

That is perhaps the central message emerging from Farnborough.

The defining competition of the coming decade may not be between individual aircraft, ships or missile systems. Rather, it will be between national economies capable of combining scientific innovation, manufacturing capacity and strategic decision-making at sufficient speed to outpace potential adversaries.

Streeting’s keynote speech suggested Britain intends to compete in precisely that contest. Whether it succeeds will depend not on the ambition of its rhetoric but on its ability to convert industrial strategy into enduring military capability.