This is a List of United Kingdom uniformed services which includes all uniformed public, emergency, armed and charity services in the United Kingdom and overseas territories.^[1]

The services listed here are national, regional, local, recognised, emergency, public-serving, military and educational and support services.

Members generally wear uniform, with distinct insignia so they can be identified in their distinct role. Rank structures are similar and similarities can be found between services. Some services may overlap and some may carry out similar duties.^[2]

• His Majesty's Naval Service
  • Royal Navy
    • Royal Naval Reserve
  • Royal Marines
    • Royal Marines Reserve
  • Royal Fleet Auxiliary
  • Naval Careers Service
• British Army
• Royal Air Force
  • Royal Auxiliary Air Force

• Merchant Navy (United Kingdom)
• Maritime Volunteer Service

• Ministry of Defence Police
• Civil Nuclear Constabulary
• Border Force
• Immigration Enforcement
• HM Revenue and Customs
• National Crime Agency (Limited powers in Northern Ireland)
• Royal Military Police (Part of the British Army)
• Royal Air Force Police (Part of the Royal Air Force)
• Royal Navy Police (Part of the Royal Naval Service)
  • Royal Marines Police
• Military Provost Guard Service (Part of the British Army)
• Military Provost Staff (Part of the British Army)

• Defence Fire and Rescue Service
• Various airport rescue and firefighting services

• British Red Cross
• First Aid Nursing Yeomanry

• British Red Cross
• His Majesty's Coastguard
• National Coastwatch Institution
• Royal National Lifeboat Institution
• Royal Voluntary Service
• Royal Air Force Mountain Rescue Service (Part of the Royal Air Force)
• The Salvation Army
• British Cave Rescue Council

• Community Cadet Forces
  • Army Cadet Force
  • Sea Cadet Corps
    • Royal Marines Cadets
  • Volunteer Cadet Corps
    • Royal Marines Volunteer Cadet Corps
  • Air Training Corps
• Combined Cadet Force
• The Scout Association
• The Baden-Powell Scouts' Association
• Girlguiding
• Boys' Brigade

• Dyfed-Powys Police (Heddlu Dyfed Powys)
• Gwent Police (Heddlu Gwent)
• North Wales Police (Heddlu Gogledd Cymru)
• South Wales Police (Heddlu De Cymru)
• British Transport Police (Heddlu Trafnidiaeth Prydeinig)
• Ministry of Defence Guard Service
• Driver and Vehicle Standards Agency (Asiantaeth Safonau Gyrru a Cherbydau)
• Welsh Government Traffic Officers (Swyddogion Traffig Llywodraeth Cymru)

• Mid and West Wales Fire and Rescue Service (Gwasanaeth Tân ac Achub Canolbarth a Gorllewin Cymru)
• North Wales Fire and Rescue Service (Gwasanaeth Tân ac Achub Gogledd Cymru)
• South Wales Fire and Rescue Service (Gwasanaeth Tân ac Achub De Cymru)

• Welsh Ambulance Services University NHS Trust (Ymddiriedolaeth Brifysgol GIG Gwasanaethau Ambiwlans Cymru)
• Welsh Blood Service (Gwasanaeth Gwaed Cymru) (a division of Velindre University NHS Trust)
• Emergency Medical Retrieval and Transfer Service Cymru (Gwasanaeth Adalw a Throsglwyddo Meddygol Brys Cymru) (funded by the Welsh Government in cooperation with the Wales Air Ambulance Charitable Trust)

• St John Ambulance Cymru
• British Association for Immediate Care
• Blood Bikes Wales (Beiciau Gwaed Cymru)
• Wales Air Ambulance Charitable Trust (Ymddiriedolaeth Elusennol Ambiwlans Awyr Cymru)

• Mountain Rescue England and Wales
• 4x4 Response
• Severn Area Rescue Association

• Volunteer Police Cadets (Cadetiaid Heddlu)
• St John Ambulance Cymru Cadets

• Police Scotland
• Scottish Prison Service
• British Transport Police
• Ministry of Defence Guard Service
• Scottish Environment Protection Agency
• Driver and Vehicle Standards Agency
• Animal and Plant Health Agency wildlife inspectors
• Scottish Government water baillifs

• Scottish Fire and Rescue Service

• Scottish Ambulance Service (including the Scottish Air Ambulance)
• Scottish National Blood Transfusion Service

• St Andrew's First Aid
• British Association for Immediate Care Scotland
• Scotland's Charity Air Ambulance
• Highland PICT Team

• Mountain Rescue Committee of Scotland
• Glasgow Humane Society Lifeboat
• St Abbs Lifeboat

• Police Service of Northern Ireland
• Belfast Harbour Police
• Belfast International Airport Constabulary
• Northern Ireland Prison Service
• Northern Ireland Security Guard Service
• Northern Ireland Environment Agency
• Forest Service Northern Ireland
• Driver and Vehicle Agency

• Northern Ireland Fire and Rescue Service

• Northern Ireland Ambulance Service HSC Trust
• Northern Ireland Blood Transfusion Service

• St John Ambulance Northern Ireland
• British Association for Immediate Care Northern Ireland
• Air Ambulance Northern Ireland

• Irish Cave Rescue Organisation (shared with the Republic of Ireland)
• Community Rescue Service

Throughout history, many uniformed services have been formed, disbanded, and merged; below is a sample of some of the more notable or national defunct uniformed services.

• English Militia (1660–1707, became the British Militia)
• British Militia (1707–c.1820s)
• British Volunteer Corps (1794–1813)
• Militia (1852–1908, became the Special Reserve, 1921–1953)
• Volunteer Force (1859–1908, became the Territorial Force)
• Special Reserve (1908–1921)
• Territorial Force (1908–1921, became the Territorial Army)
• Women's Royal Naval Service (1917–1919, 1939–1993)
• Queen Mary's Army Auxiliary Corps (1917–1921)
• Women's Royal Air Force (1918–1920)
• Women's Auxiliary Air Force (1939–1949)
• Home Guard (1940–1944)
  • Auxiliary Units
• Auxiliary Territorial Service (1938–1949)
• Home Service Force (1982–1993)

• Women's Land Army (1917–1919, 1939–1950)
• Mechanised Transport Corps (1939–1946)
• Air Transport Auxiliary (1940–1945)
• Civil Defence Service (1935–1945)
• Civil Defence Corps (1949–1968)
• Admiralty Yard Craft Service (Unknown–1976, merged into the Royal Maritime Auxiliary Service)
• Royal Maritime Auxiliary Service (1976–2008, privatised as Serco Marine Services)
• Admiralty Ferry Crew Service (1942–1963, merged into the Royal Naval Auxiliary Service)
• Royal Naval Minewatching Service (1952–1963, merged into the Royal Naval Auxiliary Service)
• Royal Naval Auxiliary Service (1963–1994)
• Women's Royal Voluntary Service (1938–Present, but ceased to be a Uniformed Service in 1998)

• Air Force Department Constabulary (c.1920s–1971, merged into the Ministry of Defence Police)
• Army Department Constabulary (as above)
• Admiralty Constabulary (as above)
• Ministry of Civil Aviation Constabulary (1948–1966, became the BAA Constabulary)
• British Airports Authority Constabulary (1966–1974)
• Royal Parks Constabulary (1872–2004)
• HM Customs and Excise (1909–2005, merged into HM Revenue and Customs)
• UK Border Agency (2008–2013, became Border Force, UK Visas and Immigration, and Immigration Enforcement)
• Serious Organised Crime Agency (2006–2013, became the National Crime Agency)

• Army Fire Service (1940–1990, merged into the Defence Fire Service)
• Ministry of Civil Aviation Aerodrome Fire Service (1946–1965, became the BAA Fire Service)
• National Fire Service (1941–1948)
• Auxiliary Fire Service (1938–1941, 1948–1968, associated with the Civil Defence Service and Corps)

• Welbeck Defence Sixth Form College (1953–2021)
• Air Defence Cadet Corps (1938–1941, became the Air Training Corps)
• National Association of Training Corps for Girls
  • Girls Training Corps (1941–1964, merged into the Girls Venture Corps)
  • Girls Nautical Training Corps (1942–1980, merged into the Sea Cadet Corps)
  • Women's Junior Air Corps (1939–1964, merged into the Girls Venture Corps)
• Girls Venture Corps Air Cadets (1964–2023, some individual units continue as separate charities)

• British Armed Forces
• Law enforcement in the United Kingdom