UK Defence Stocks: Value or Value Trap in 2026?

UK defence stocks have been one of the strongest-performing sectors in the FTSE since Russia's Ukraine invasion in 2022. BAE Systems is up over 160% from its 2022 low. Rolls-Royce has retraced from £0.75 to over £6. The question for a value investor: at these prices, is there still value — or has the re-rating already happened?

The Macro Backdrop

NATO's 2% GDP defence spending target is now a hard commitment rather than an aspiration. The UK government has pledged to reach 2.5% by 2027, with cross-party support for further increases. European NATO members collectively are adding approximately £150bn of annual procurement. This is structural, multi-year demand growth that justifies a re-rating of earnings multiples.

Value vs Value Trap: The Distinction

The value investor's concern with defence stocks at current levels: the re-rating has largely already happened. BAE at 21× forward earnings is no longer cheap on a historical basis. The order book growth is real, but priced in. QinetiQ, by contrast, trades at 16× and has a more defensible niche in test and evaluation services with high switching costs — more consistent with a genuine value opportunity.

AIM Defence Names

The highest-conviction value opportunities in UK defence are on AIM, where the sector still trades at significant discounts to book. Several sub-£100m companies supplying components, cyber security and specialist electronics to BAE and MBDA are trading at DipBuster Scores above 70 with positive director buying. These require deeper due diligence given liquidity constraints but offer superior risk/reward to the large-cap names at current prices.