Dan Jarvis, the newly appointed Defence Secretary, faces pressure to seek a substantial increase in funding for the United Kingdom’s Defence Investment Plan amid ongoing concerns over budget shortfalls. Sources within Whitehall have indicated that Jarvis should demand at least £18 billion in additional Treasury support before endorsing the plan, which is expected to be finalized ahead of a NATO meeting scheduled for July 7.

Jarvis, a former Parachute Regiment officer and current security minister since the 2024 general election, assumed the Defence Secretary role following the resignation of his predecessor, John Healey. Healey stepped down abruptly last Thursday, citing dissatisfaction with the proposed defence budget increase. According to Healey, the government had committed only £13.5 billion in extra funding, falling significantly short of the £28 billion estimated by Army leadership to cover the necessary investments outlined in the Strategic Defence Review.

The planned budget rise would see defence spending increase marginally from 2.6 percent of gross domestic product (GDP) next year to 2.68 percent by 2030, a level Healey described as insufficient to maintain operational readiness or safeguard military personnel. In his resignation letter, he warned that the current funding proposals would lead to reduced force readiness and heightened risks to service members, potentially undermining national security.

Government officials have detailed that Chancellor Rachel Reeves has allocated £10 billion of new funds to the Ministry of Defence, supplemented by £3.5 billion expected to be realized through "efficiency savings," including the decommissioning of warships, bases, and aircraft. Nonetheless, insiders suggest this combined figure falls short of the minimum necessary to implement the 62 new equipment recommendations in the Strategic Defence Review, with some urging that the increase should be raised to no less than £18 billion.

In response to Healey’s resignation, Labour leader Sir Keir Starmer expressed confidence in the party’s record on defence funding, emphasizing his pride in their financial commitments. Meanwhile, Jarvis has been granted an additional two weeks to scrutinize the proposals before making a final decision on the investment plan.

The development comes amid heightened attention to the United Kingdom’s defence posture and budget priorities as the government prepares for important discussions with NATO allies. The outcome of Jarvis’s review and the Treasury’s response will be closely watched by military officials and policymakers concerned about the future capability and readiness of the British Armed Forces.