Rolls-Royce (LON: RR) stock touched 1,369p on Tuesday, reaching record territory as London’s defence sector staged one of its sharpest single-session rallies in recent memory.

The catalyst was political: Andy Burnham’s appointment of John Healey as Chancellor sent an immediate signal to markets that British defence spending could be set to accelerate.

Healey’s background as a former defence secretary made the Treasury appointment unusually significant for arms manufacturers, suggesting a Chancellor with deep institutional knowledge of military procurement priorities.

Babcock (LON: BAB) led the sector’s gainers, with its shares climbing more than 6.5 percent within the first 30 minutes of the Tuesday session alone.

BAE Systems (LON: BA) posted a 2.8 percent advance, cementing its position among the session’s strongest performers across the wider London market.

Rolls-Royce, while rising more modestly at 0.7 percent, carried the added distinction of hitting an all-time high price, a milestone that underscores how far the aerospace and defence giant has travelled in its recovery.

Investors interpreted Healey’s move from the defence brief to the Treasury as a structural shift, increasing the probability that future government budgets would prioritise London-listed manufacturers supplying the armed forces.

The concentration of gains among defence supply heavyweights rather than the broader market reflected a targeted bet on procurement spending rather than any generalised risk-on sentiment.

Babcock, which provides critical support services to the Royal Navy and other branches of the British military, stands to benefit directly should the new Chancellor champion elevated defence budget allocations.

BAE Systems, as the United Kingdom’s largest defence contractor, similarly occupies a front-line position in any expansion of government arms and equipment expenditure.

The Tuesday moves add further momentum to a sector that has already seen substantial re-rating over recent years as European governments responded to shifting geopolitical pressures with higher military budgets.

Whether Healey translates his defence background into concrete fiscal commitments will be the question markets watch most closely as the new Treasury team settles into its brief.