The outgoing Prime Minister drew scorn after it emerged only £1billion of this is fresh investment, with a £4billion drone programme having been announced last year.

Starmer will publish full funding plans for the Defence Investment Plan (Dip), the government’s 10-year blueprint for the armed forces.

The new defence investment plan has allocated £14.5bn to fund Britain’s defence, still falling well short of the £28bn officials previously said was needed