UK Defence Secretary John Healey Resigns Over the Defence Investment Plan Funding Settlement

In his resignation letter, Healey told Keir Starmer: “You have been unable, and the Treasury has been unwilling, to commit the resources that the nation needs to defend the country at this time of rising threats.” The settlement, he wrote, “falls well short of what is required for defence and the country at this dangerous time,” and signing it would have meant decisions that “would reduce the readiness of our Forces and increase the risk to personnel on operations, and could make the country less safe.” The Defence Investment Plan the settlement was meant to fund had been expected to publish that week.

The resignation did not stand alone. Armed forces minister Al Carns followed within hours, calling the settlement “not fit for purpose”; Starmer named Dan Jarvis Defence Secretary the same evening. It was the second cabinet resignation in a month — health secretary Wes Streeting had quit in May over his confidence in Starmer’s leadership — and it landed days before a Makerfield by-election that could return Greater Manchester mayor Andy Burnham to Parliament and a possible leadership challenge.

The proprietary read. A defence secretary resigning over a number is the rarest kind of Whitehall event, and it converts a budget dispute into a public marker. Großwald has tracked the distance between Britain’s declared ambition and its funded plan for weeks — the Defence Investment Plan against the £13.5 billion question; Healey’s letter states that distance in the first person and from inside the department. Jarvis inherits the same settlement Healey would not sign, which means the arithmetic has not changed, only the signatory. The test is the number the DIP carries when it finally publishes, and whether it survives the Ankara summit. Tracked in Signal No. 80.