Armed forces of the United Kingdom
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| Armed forces of the United Kingdom | |
|---|---|
| Name | Armed forces of the United Kingdom |
| Branches | British Army, Royal Navy, Royal Air Force |
| Headquarters | Ministry of Defence, Whitehall, London |
| Commander-in-chief | Charles III |
| Commander-in-chief title | Monarch |
| Chief minister | Rishi Sunak |
| Chief minister title | Prime Minister |
| Minister | Grant Shapps |
| Minister title | Secretary of State for Defence |
| Commander | Admiral Sir Ben Key |
| Commander title | Chief of the Defence Staff |
| Age | 16–17 (with parental consent), 18 for active service |
| Active | 153,290 (2023) |
| Reserve | 78,660 (2023) |
| Amount | £50.2 billion (2023) |
| Percent GDP | 2.1% (2023) |
| Domestic suppliers | BAE Systems, Rolls-Royce Holdings, MBDA, Babcock International |
| Foreign suppliers | United States, European Union |
| History | Military history of the United Kingdom |
| Ranks | Army ranks, Navy ranks, RAF ranks |
Armed forces of the United Kingdom. The military forces of the United Kingdom, formally known as His Majesty's Armed Forces, comprise three professional service branches: the British Army, the Royal Navy, and the Royal Air Force. They are commanded by the monarch, currently Charles III, with day-to-day administration falling to the Ministry of Defence and the Secretary of State for Defence. The forces are globally deployed, with permanent bases in locations such as Cyprus, Gibraltar, and the Falkland Islands, and are a leading member of the NATO alliance.
History
The origins of the modern British military are rooted in the Acts of Union 1707, which merged the armies and navies of England and Scotland. The Royal Navy achieved global dominance following victories like the Battle of Trafalgar under Horatio Nelson. The British Army expanded the British Empire through conflicts such as the Napoleonic Wars and the Second Boer War. The 20th century was defined by the two world wars, including major engagements like the Battle of the Somme, the Battle of Britain, and the D-Day landings. The post-war period saw decolonisation conflicts like the Malayan Emergency and the Falklands War, alongside Cold War commitments in West Germany.
Organisation and structure
Overall command is vested in the monarch as commander-in-chief, with executive authority exercised by the Prime Minister and the Cabinet. The tri-service headquarters is the Ministry of Defence on Whitehall, led by the Secretary of State for Defence. The professional head of the military is the Chief of the Defence Staff, supported by the heads of the three services: the Chief of the General Staff, the First Sea Lord, and the Chief of the Air Staff. Key joint commands include Strategic Command and the Permanent Joint Headquarters in Northwood.
Personnel
As of 2023, there were approximately 153,290 full-time trained personnel across the regular forces. The British Army is the largest branch, followed by the Royal Air Force and the Royal Navy, which includes the Royal Marines. Reserve forces, such as the Army Reserve and the Royal Auxiliary Air Force, provide vital support. All personnel swear allegiance to the reigning monarch. Notable training establishments include the Royal Military Academy Sandhurst, Britannia Royal Naval College, and RAF College Cranwell. The forces operate a non-discriminatory recruitment policy under the Armed Forces Act.
Equipment
The armed forces operate a wide array of advanced equipment. The Royal Navy's surface fleet is centred on two Queen Elizabeth-class aircraft carriers, HMS Queen Elizabeth and HMS Prince of Wales, supported by Type 45 destroyers and Astute-class submarines. The British Army's primary armoured fighting vehicle is the Ajax, with the Challenger 2 as its main battle tank. The Royal Air Force flies combat aircraft such as the Eurofighter Typhoon and the F-35B Lightning II, alongside transport aircraft like the Airbus A400M Atlas. Strategic deterrence is provided by the Vanguard-class ballistic missile submarines armed with Trident missiles.
Operations and deployments
British forces are engaged in continuous global operations, often as part of NATO, United Nations, or coalition frameworks. A significant permanent garrison is maintained in Cyprus at RAF Akrotiri. Other enduring deployments include providing security in the Falkland Islands and at Gibraltar. Recent major combat operations include the War in Afghanistan and the Iraq War. Current training and capacity-building missions are active in countries like Ukraine, Estonia, and Poland as part of NATO Enhanced Forward Presence. The Royal Navy also conducts freedom of navigation patrols in regions such as the South China Sea.
Defence policy and expenditure
The foundational document of British defence policy is the Integrated Review, refreshed in 2023, which sets out a tilt towards the Indo-Pacific while maintaining focus on Euro-Atlantic security. The primary security alliance is NATO, with the UK being a founding member and key contributor. The defence budget for 2023/24 was approximately £50 billion, consistently meeting the NATO target of spending 2% of GDP on defence. Major procurement is governed by the Defence Equipment Plan, with key industrial partners including BAE Systems and Rolls-Royce Holdings. The nuclear deterrent, operated by the Royal Navy, is maintained under the policy of Continuous At Sea Deterrence.