The UK defence sector is seeing a significant profits boost as governments worldwide increase military spending, with industry giants like Rolls-Royce and BAE Systems raising their earnings guidance. This surge is driven by heightened geopolitical tensions and renewed commitments from NATO allies, creating a favorable environment for defence contractors. Investors and industry analysts are closely watching these developments, as they signal sustained growth in the defence market.
Rolls-Royce Lifts Profit Forecast on Defence and AI Demand
Rolls-Royce, known for its jet engines and power systems, has upgraded its underlying operating profit forecast for this year to £4.7bn-£4.9bn, up from the previous £4bn-£4.2bn. The company also raised its free cash flow guidance to £3.8bn-£4bn, reflecting strong performance across its defence, power generation, and commercial aviation divisions. The increase is attributed to a jump in defence spending since Russia's invasion of Ukraine in 2022, as well as growing demand from datacentres powering AI companies.
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The company's power generation unit has seen a surge in orders for gas turbines used in datacentres, particularly in the US, where AI infrastructure is expanding rapidly. Meanwhile, its civil aerospace business has rebounded as long-haul travel recovers post-pandemic, boosting revenues. CEO Tufan Erginbilgiç noted that the company's transformation strategy is delivering results, and he expressed confidence in the visibility of future defence orders.
BAE Systems Also Benefits from Increased Defence Budgets
BAE Systems, another major UK defence contractor, has similarly raised its profit outlook, citing commitments from governments to boost defence investment. The company is a key supplier of military vehicles, naval ships, and advanced weapons systems, and it is well-positioned to capitalize on the global rearmament trend. With NATO allies pledging to increase defence spending to 2% or more of GDP, BAE Systems expects sustained demand for its products.
Defence Spending Drivers: Geopolitics and Technology

Governments are not only increasing budgets but also investing in next-generation technologies, including autonomous weapons and advanced surveillance systems. At the recent NATO summit, commitments were made for systems like the Saab GlobalEye airborne early warning aircraft and the MQ-4C Triton high-altitude surveillance drone, both of which use Rolls-Royce engines. Additionally, the UK's defence investment plan confirmed funding for the Tempest fighter jet until 2030 and added £5bn for autonomous weapons development.
This shift is driving innovation in areas like loyal wingman drones, which are large jet-powered unmanned aircraft designed to fly alongside crewed fighters. Rolls-Royce is developing engines for the Brontanax drone, a project that highlights the growing role of unmanned systems in modern warfare.
Market Impact and Future Outlook
The defence sector's strong performance is a bright spot in the UK economy, contributing to job creation and technological advancement. However, investors should consider the cyclical nature of defence spending and potential geopolitical shifts. The table below compares the key financial metrics of Rolls-Royce and BAE Systems:
| Company | Profit Guidance (2024) | Key Growth Drivers |
|---|---|---|
| Rolls-Royce | £4.7bn-£4.9bn | Defence, datacentres, civil aviation |
| BAE Systems | Increased (exact not disclosed) | Military vehicles, naval, weapons |
Analysts are optimistic about the long-term prospects, but caution that budget approvals and political changes can affect order flows. For now, the momentum is positive, with both companies expecting to benefit from the ongoing rearmament in Europe and Asia.
Key Takeaways for Investors and Industry Watchers
- Defence spending is rising globally, driven by geopolitical tensions and NATO commitments.
- Rolls-Royce and BAE Systems have raised profit guidance, signaling strong demand.
- AI datacentres are a new growth area for Rolls-Royce's power generation unit.
- Autonomous weapons and drones represent the future of defence procurement.
- Investors should monitor government budgets and policy shifts.