Shares in UK defence companies surged following the appointment of John Healey as Chancellor of the Exchequer, signaling investor optimism for increased military spending and procurement under the new administration. Healey, who resigned as Defence Secretary last month citing insufficient government funding for the armed forces, took office amid expectations that he will prioritize defence investment.

On the London Stock Exchange, defence contractors including Babcock International, BAE Systems, Rolls-Royce, and Qinetiq saw significant share gains. Babcock’s stock climbed as much as 7.8% before settling up around 4.1%, making it one of the top risers on the FTSE 100. BAE Systems rose between 1.8% and 3.25%, while Qinetiq recorded increases of approximately 3–4%. Rolls-Royce shares also edged higher, supported by its critical role in supplying engines for military aircraft and submarines, including technology for the new Dreadnought nuclear submarine program. Services firm Serco, which provides maintenance and support to the Ministry of Defence, similarly experienced a modest uptick.

Healey’s move to the Treasury follows his resignation from Sir Keir Starmer’s cabinet in protest over what he described as inadequate defence budgets, which he argued exposed the country’s security to risk. He has long advocated for raising defence spending above current levels, pressing for an increase from the present target of around 2.7% of GDP by 2030 to 3%, and ultimately to NATO’s benchmark of 3.5% by 2035. Healey and Prime Minister Andy Burnham have also indicated a desire to prioritize British firms in government procurement to support domestic industry and re-industrialize the country’s defence sector.

Despite positive market reactions, questions remain about how increased spending will be financed. Long-term borrowing costs have climbed in recent weeks, with ten-year government bond yields rising above 5%, reflecting some investor caution. The prime minister’s office has described Healey’s appointment as a “signal of intent” for defence investment but stopped short of committing to specific targets, including the contentious 3% of GDP spending goal. Officials also dismissed former reports suggesting the introduction of war bonds to fund military expenditure.

Industry representatives have welcomed Healey’s appointment. Stephen Phipson, chief executive of the manufacturing trade body Make UK, highlighted Healey’s reputation for pragmatism and effective government delivery. Former British Army chief Lord Dannatt described the selection as a “masterstroke,” underscoring expectations that Healey’s tenure could lead to significant policy shifts benefiting defence manufacturers.

While defence stocks rallied on prospects of a spending boost, other sectors faced pressure. Shares in some water industry firms declined after Burnham reiterated intentions to bring more industries under public control, reflecting the new government’s broader economic agenda.

Overall, Healey’s stewardship of the Treasury is being closely watched by investors and industry alike for indications on if, when, and how defence spending will be increased, balancing ambition with economic realities.