Dan Jarvis becomes UK Defence Minister after John Healey quits over budget dispute

Healey, who had served as Defence Minister since the Labour government took office in 2024, used his resignation letter to accuse Starmer and the Treasury of failing to provide the funds that the armed forces required. "Seitdem waren Sie nicht in der Lage – und das Finanzministerium nicht willens – die Mittel bereitzustellen, die das Land in dieser Zeit wachsender Bedrohungen zur Verteidigung benötigt," he wrote.

The minister justified his decision by warning that, without an adequate budget, he would be forced into decisions that would weaken military readiness. "I am forced to make decisions that would reduce the readiness of our armed forces and increase the risk to people on operations and make the country less safe," he wrote in the letter.

Starmer's defence of the budget

Healey also stated that the government's investment plan remained "far below what is necessary for defence and the country in this dangerous time" and said that the target of raising defence spending to three percent of gross domestic product by 2030 would clearly be missed under the current plans.

Starmer rejected the criticism in a letter of his own, published on the government website, in which he insisted the budget would "auf nachhaltige Weise für einen beispiellosen Anstieg der Verteidigungsausgaben" sorgen. He argued that his government had inherited armed forces that had been "jahrelang unterfinanziert und vernachlässigt" by the previous Conservative administration.

The Prime Minister added that the planned budget would "die Ressourcen bereitstellen, die unser Militär benötigt, um uns zu schützen, und die Klarheit bieten, die die britische Verteidigungsindustrie für ihre Planung benötigt." He closed his letter with the words: "Ich bin fest entschlossen, das krisengebeutelte Großbritannien wieder aufzubauen. Es tut mir leid, dass Du nicht an dieser Arbeit mitwirken wirst."

Starmer also pointed to recent foreign-policy work, including the UK's leadership of the Coalition of the Willing on Ukraine, the defence of allies in the Gulf, and cooperation on a Strait of Hormuz plan, as evidence that his government had helped make the world safer. "Ich werde stets das Notwendige tun, um die Sicherheit unseres Landes zu gewährleisten," he said.

A military career before politics

In his response, Starmer said the government had already promised to raise defence spending to 2.5 percent of GDP by 2027 as a step toward the longer-term 2030 goal, and accused the previous Conservative government of leaving the military hollowed out. Many in the British military, however, have publicly described the planned timeline for the spending increase as too slow given the current threat environment.

Dan Jarvis, the incoming minister, brings a deep personal military background to the role. A graduate of the Royal Military Academy Sandhurst, he was commissioned as an officer in the Parachute Regiment and saw operational service in Kosovo, Northern Ireland, Iraq, and Afghanistan. He is described in the source reporting as a security expert with military experience.

Jarvis later studied International Politics and Strategic Studies at the Welsh University of Aberystwyth before entering politics. According to his own website, he was the first person since the Second World War to resign his officer's rank in order to stand in a parliamentary by-election, a step he took in 2011 to contest and win the seat of Barnsley Central.

Political pressure on Starmer

He held the Barnsley Central constituency from 2011 and, between 2011 and 2015, occupied a number of positions within the parliamentary Labour group. In 2018, he was elected as the first Mayor of South Yorkshire. After his re-election in 2024, he returned to Westminster as MP for the newly drawn Barnsley North seat.

Before joining the Ministry of Defence, Jarvis served as a Minister of State in the Home Office and in the Cabinet Office, the department that supports the work of the Cabinet itself. From 2017 to 2019, he also sat on the Joint Committee on the National Security Strategy, giving him a track record on defence and security issues that matches the brief he is now taking on.

His appointment comes at a politically difficult moment for Starmer. After Labour's poor performance in May's local and regional elections – described in the source reporting as a "Debakel" for the party – the Prime Minister has been facing calls to resign from within his own parliamentary party. Healey himself had previously been regarded as one of Starmer's more loyal cabinet members, which makes his departure especially pointed.

Healey's wider significance

Two other senior Labour figures have publicly positioned themselves to challenge Starmer for the party leadership. Manchester Mayor Andy Burnham has announced he will stand in the upcoming by-election in the Makerfield constituency, scheduled for the coming Thursday, with the clear intention of entering the House of Commons and then mounting a leadership challenge. Health Minister Wes Streeting, who resigned in mid-May, has also said he intends to run against Starmer.

Observers cited in the reporting consider it unlikely that Healey himself harbours leadership ambitions, noting that his resignation is best read as a protest over policy rather than a play for the top job. Nevertheless, the loss of a previously loyal defence minister is widely seen as a further setback for Starmer, whose room for manoeuvre inside his own party continues to shrink.

What happens next

Healey's resignation letter itself ended on a personal note, addressing the Prime Minister directly: "Sie wissen, was die Verteidigung braucht." In his reply, Starmer thanked Healey for his service and reiterated his determination to press ahead with the government's defence plans, leaving open the question of whether the new minister, Jarvis, will be given a substantially different settlement from the Treasury to fund the military over the years ahead.

Politician and political scientist von Ondarza, cited in the source material, noted that there remains a cross-party consensus in the UK on supporting Ukraine, even as the domestic political turmoil deepens. That external unity, the report suggests, sits in sharp contrast to the internal fractures now visible inside the governing Labour Party.