More than 10,000 personnel across the UK’s armed forces are medically unfit for combat, according to new figures disclosed by the Ministry of Defence (MoD). The revelation highlights serious concerns about the readiness of Britain’s military, with one fifth of the regular forces unable to deploy without restrictions, amid growing fears about the size and capabilities of the army.
As reported by The Times, nearly 15,000 personnel are classified as having “limited deployability” due to medical conditions, meaning they can only be sent on missions that meet certain criteria—such as avoiding extreme temperatures or exposure to hazardous substances like noise or chemicals. This includes 16,335 soldiers in the British Army who are either “medically not deployable” or only “medically limited deployable.” This represents 23% of the army’s total strength of 71,340 personnel. Just 55,005 soldiers are considered fully deployable and capable of serving without medical restrictions.
The figures also reveal that nearly 3,000 sailors are deemed unfit for sea service under any circumstances, and 2,363 are medically limited deployable, meaning they can only serve under certain conditions. The Royal Air Force (RAF) has the highest proportion of personnel classified as medically unfit for deployment, with 13% (3,721 out of 27,969) of its members deemed unfit for duty.
The statistics have raised alarm bells across the political and defence spectrum, with critics pointing to the troubling combination of a shrinking military force and a rising number of personnel unable to serve effectively due to health issues. Mark Francois, the shadow armed forces minister, expressed deep concern over the figures, particularly regarding the army’s readiness to fight. “Not only has the army now shrunk to just over 71,000 soldiers, almost 2,000 below its established strength, but almost a quarter of those remaining troops are not medically fully deployable,” Francois said. “This requires urgent action—not just in terms of recruitment and retention, but also in providing remedial care, especially physiotherapy, to ensure our soldiers are truly fighting fit.”
The situation is compounded by wider concerns about the size and capabilities of the armed forces. According to former military leaders, the British Army is already too small to effectively meet the challenges posed by modern warfare. General Sir Richard Dannatt, the former chief of the general staff, described the figures as “alarming” and called for “vigorous remedial action” to address both the limited deployability of personnel and the army’s shrinking size. He warned that the army’s current state would leave it vulnerable in any conflict with a near-peer adversary like Russia. “The Russians have lost the equivalent of four times the size of the British Army in Ukraine,” Lord Dannatt remarked, highlighting the gap between the UK’s military size and the harsh realities of modern combat.
The MoD figures show a total of 14,350 service members across the armed forces are classified as “medically limited deployable,” while 13,522 personnel are “medically not deployable” at all. Although the MoD claims that 90% of personnel are deployable at any given time, these figures underscore the growing strain on the forces. A defence source emphasized that, despite their medical limitations, personnel could still serve in non-combat roles, such as logistics or administrative positions, though this doesn’t mitigate the concerns about combat readiness.
The decline in the army’s numbers is expected to continue. John Healey, the shadow defence secretary, has warned that the army’s size will fall further below 70,000 next year. These cuts come amid rising concerns about the UK’s strategic position, especially as tensions with Russia escalate over the ongoing conflict in Ukraine.
The figures were disclosed following questions from the Conservative Party, with veterans minister Al Carns confirming the numbers. In a separate speech, Carns suggested that, in a hypothetical war with Russia, the British Army would be “killed or wounded within six months to a year,” based on current casualty rates from the conflict in Ukraine. This stark warning is said to have angered some senior government officials, including those at Number 10 Downing Street.
The situation is further complicated by the UK’s increasing reliance on civilian staff at the MoD. In October, The Times revealed that the number of civil servants in the MoD has surpassed the number of personnel in the Royal Navy and RAF combined. As of April, there were 63,702 civilians working at the MoD, an increase of 6% from 2020.
The government has yet to respond to the calls for increased defence spending, though experts have warned that without significant investment, both in terms of personnel and equipment, the UK’s military will continue to face serious challenges. The Labour Party, which has promised higher defence spending, has yet to clarify the specifics of its proposals.
In response to the concerns raised, a MoD spokesperson stated: “The vast majority of our service personnel—around 90%—are deployable at any point, with most of the remaining members employed in wider military roles. We are committed to providing world-class medical treatment to ensure personnel can return to duty where possible, or to support their transition to civilian life.”
