United Kingdom — HM Treasury & Dan Jarvis

United Kingdom — HM Treasury: The United Kingdom — HM Treasury is responsible for funding the A 4.7 billion gap in the Defence Investment Plan and will need to determine how this will be achieved in the next budget.

Dan Jarvis: As the current Defence Secretary, Dan Jarvis secured a A 15 billion uplift in defence spending through the Defence Investment Plan, but left a A 4.7 billion funding gap for the next prime minister.

United Kingdom — HM Treasury: United Kingdom — HM Treasury is accused by John Healey of being unwilling to commit sufficient resources to the Defence Investment Plan, leading to the delay and eventual resignation of the Defence Secretary. This highlights the government's struggle to balance defense spending with other fiscal priorities.

Dan Jarvis: Dan Jarvis was appointed as the new Defence Secretary following John Healey's resignation. He is now tasked with defending the revised Defence Investment Plan and refocusing it on modern warfare technologies like drones.