His Majesty's Armed Forces (HM Armed Forces), also known as the British Armed Forces, are the military services responsible for the defence of the United Kingdom, its Overseas Territories, and the Crown Dependencies. They also promote the UK's wider security interests, support international peacekeeping efforts, and provide humanitarian aid. The forces consist of three main branches: the Royal Navy, the British Army, and the Royal Air Force. They operate under the command of the Chief of the Defence Staff, who reports to the Secretary of State for Defence and the Prime Minister.
Serves as the primary administrative and command centre for the UK's armed forces, coordinating defence policy, strategic planning, operations, and resource management.
An imposing mid-20th century building located in the heart of Britain's government district, designed with a blend of classical and modern architectural elements. It houses extensive office space, secure command facilities, and historical artefacts.
A highly structured, disciplined, and mission-driven environment. It combines military personnel from all three services with civilian civil servants, fostering a collaborative approach to national security and defence.
The central hub for UK defence decision-making, formulation of military strategy, and coordination of national and international defence activities. It is the public face of the UK's defence establishment.
HM Armed Forces maintain a significant and persistent global presence. This includes permanent joint operating bases in Cyprus, Gibraltar, the Falkland Islands, and the British Indian Ocean Territory, as well as smaller facilities and training teams in numerous countries. They contribute to NATO operations, UN peacekeeping missions, and international coalitions against terrorism and piracy. The forces are regularly deployed on exercises worldwide, often with key allies, and provide humanitarian aid and disaster relief when required. This global network supports the UK's foreign policy objectives, protects its interests, and contributes to international security and stability.
Ministry of Defence Main Building, Whitehall
London
N/A
United Kingdom
Address: Army Headquarters, Monxton Road, Andover, SP11 8HJ
Oversees Army units and establishments across the UK and supports deployed forces globally, ensuring land-based military readiness and capability.
Address: Navy Command Headquarters, Leach Building, HMS Excellent, Whale Island, Portsmouth, PO2 8BY
Directs Royal Navy operations in UK home waters and internationally, safeguarding maritime interests, projecting naval power, and supporting joint operations.
Address: Headquarters Air Command, RAF High Wycombe, Walters Ash, High Wycombe, Buckinghamshire, HP14 4UE
Manages RAF stations and assets across the UK, directs air operations for national defence and overseas commitments, and ensures UK air and space capabilities.
Address: Permanent Joint Headquarters (PJHQ), Northwood Headquarters, Sandy Lane, Northwood, HA6 3HP
Plans and executes joint and combined operations across the globe, integrating capabilities from the Royal Navy, British Army, and Royal Air Force.
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As of April 2025, HM Forces' leadership includes:
HM Forces has been backed by several prominent investors over the years, including:
Over the past 12-18 months, HM Armed Forces and the Ministry of Defence have seen several key leadership changes. These include new appointments for the Chief of the Air Staff, Second Sea Lord, and Commander Field Army. Additionally, a future change in the Chief of the General Staff has been announced.
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Email addresses within the Ministry of Defence (MoD) and HM Armed Forces generally adhere to UK government domain standards, primarily using '@mod.gov.uk'. Variations exist for specific branches (e.g., '@army.mod.uk', '@royalnavy.mod.uk', '@raf.mod.uk') or specific units. For official inquiries, utilizing formal contact channels via the GOV.UK website or respective service websites is recommended over direct email unless a specific contact is provided.
Common formats include [firstname].[lastname]@mod.gov.uk or [firstname].[lastname][number]@mod.gov.uk. Service-specific variations also exist, e.g., j.bloggs123@army.mod.uk.
Format
john.doe@mod.gov.uk
Example
70%
Success rate
GOV.UK / Ministry of Defence • February 24, 2024
The Royal Air Force, operating alongside US forces, conducted a fourth series of deliberate and targeted strikes against Houthi military facilities in Yemen. These actions aim to degrade Houthi capabilities used to attack international maritime shipping in the Red Sea and Gulf of Aden....more
GOV.UK / Ministry of Defence • January 22, 2024
The United Kingdom is deploying 20,000 service personnel from the Royal Navy, British Army, and Royal Air Force to participate in Exercise Steadfast Defender 24. This is NATO's largest military exercise in decades, involving approximately 90,000 troops from all 32 NATO allies, demonstrating the Alliance's collective defence capabilities and readiness....more
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