The Specialist Firearms Command (MO19) is the
firearms unit of the
Metropolitan Police Service.
Formed in 2005 but with antecedents dating back to 1966, the Command is responsible for providing a firearms-response capability, assisting the rest of the service, which is not routinely armed.
Precursors
At its
formation in 1829, the police service did not routinely carry firearms, but the
Home Secretary
The secretary of state for the Home Department, more commonly known as the home secretary, is a senior minister of the Crown in the Government of the United Kingdom and the head of the Home Office. The position is a Great Office of State, maki ...
later authorised the
Commissioner
A commissioner (commonly abbreviated as Comm'r) is, in principle, a member of a commission or an individual who has been given a commission (official charge or authority to do something).
In practice, the title of commissioner has evolved to incl ...
to purchase fifty pairs of
flintlock pistols for use in emergencies—such as those that involved the use of firearms. As time progressed, the obsolete flintlocks were decommissioned from service, being superseded by early
revolver
A revolver is a repeating handgun with at least one barrel and a revolving cylinder containing multiple chambers (each holding a single cartridge) for firing. Because most revolver models hold six cartridges before needing to be reloaded, ...
s. At the time, burglary (or "house breaking" as it was then called) was a common problem for police, and "house breakers" were often armed. Due to killings of officers by armed criminals in the outer
districts
A district is a type of administrative division that in some countries is managed by the local government. Across the world, areas known as "districts" vary greatly in size, spanning regions or counties, several municipalities, subdivisions ...
of the
metropolis
A metropolis () is a large city or conurbation which is a significant economic, political, and cultural area for a country or region, and an important hub for regional or international connections, commerce, and communications.
A big city b ...
, and after public calls debating whether Peel's service should be fully armed, the Commissioner applied to Peel for authorisation to supply officers in the outer districts with revolvers. The authorisation was issued on the condition that revolvers could only be issued if, in the opinion of the senior officer, the officer could be trusted to use it safely, and with discretion. From that point, officers who felt the need to be armed could be. The practice lasted until 1936, although the vast majority of the system was phased out by the end of the 19th century.
In the 1860s, the flintlock pistols that had been purchased in 1829 were decommissioned from service, being superseded by 622
Beaumont–Adams revolvers firing the
.450 cartridge, which were loaned from the
army
An army, ground force or land force is an armed force that fights primarily on land. In the broadest sense, it is the land-based military branch, service branch or armed service of a nation or country. It may also include aviation assets by ...
stores at the
Tower of London
The Tower of London, officially His Majesty's Royal Palace and Fortress of the Tower of London, is a historic citadel and castle on the north bank of the River Thames in central London, England. It lies within the London Borough of Tower Hamle ...
following the 1867
Clerkenwell bombing. In 1883, a ballot was carried out to gather information on officers' views about arming, and 70% of the 6,325 officers serving on outer divisions wanted to be issued with revolvers. The now-obsolete Adams revolver was returned to stores for emergencies, and the
Bulldog 'Metropolitan Police' revolver was issued to officers on the outer districts who felt the need to be armed. On 18 February 1887,
PC 52206 Henry Owen became the first Met officer to fire a revolver while on duty, after being unable to alert the inhabitants of a premises on fire.
Following the
Siege of Sidney Street in 1911, one thousand self-loading
Webley & Scott
Webley & Scott is an arms manufacturer founded in Birmingham, England. Webley produced handguns and long guns from 1834 to 1979, when the company ceased to manufacture firearms and instead turned its attention to producing air pistols and air ...
pistols were purchased. In 1914, the Bulldogs were withdrawn from service and returned to stores.
Lord Trenchard standardised the issue of pistols among divisions with the number of firearms issued depending on the size of the area; ten pistols with 320 rounds of ammunition were issued to divisional stations, six pistols with 192 rounds per sub-divisional station, and three pistols with 96 rounds to each section station. In 1936, the authorisation to carry revolvers on outer districts was revoked, and at the same time
Canadian Ross rifles were purchased in the prelude to the
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
. A review in 1952 following the
Derek Bentley case found 15% of firearms in service to be defective; leading to
Special Branch
Special Branch is a label customarily used to identify units responsible for matters of national security and Intelligence (information gathering), intelligence in Policing in the United Kingdom, British, Commonwealth of Nations, Commonwealth, ...
and
Royalty Protection Officers being re-armed with an early version of the
Beretta semi-automatic pistol.
History
1966–1979
As it was originally named, the Firearms Wing (designation D6) was formed as part of the
Civil Defence and Communications Branch within
'D' Department. The wing was formed in response to
the murder of three officers. The
Commissioner
A commissioner (commonly abbreviated as Comm'r) is, in principle, a member of a commission or an individual who has been given a commission (official charge or authority to do something).
In practice, the title of commissioner has evolved to incl ...
requested applications from officers within the service who had experience in the handling of firearms, such as ex-members of the armed forces or those who attended shooting clubs. The officers who applied were sent to the
Small Arms Wing of the School of Infantry to become permanent instructors for the service's newly formed firearms wing. Upon the officers' return to the service, they trained firearms officers.
After the unit had changed its name from D6 to D11 in July 1967, the Instructors possessed a limited operational role that consisted of providing CS gas at sieges. This progressed to providing tactical advice and support and in 1975 as a direct result of the Munich Olympic games massacre, D11 was formally given an operational role in Counter Terrorist and serious armed crime operations. Its officers qualified using the
Smith & Wesson Model 28 or
Model 19 .357 revolvers,
Browning Hi-Power
The Browning Hi-Power is a single-action, semi-automatic pistol available in the 9×19mm Parabellum and .40 S&W calibers. It was based on a design by American firearms inventor John Browning, and completed by Dieudonné Saive at FN Herstal. ...
semi-automatic pistols, the
Heckler & Koch MP5 SD (Suppressed) submachine gun and the
Remington 870 shotgun with some officers being trained and authorised to use the
Enfield Enforcer 7.62 mm sniper rifle
A sniper rifle is a high-precision, long range shooting, long-range rifle. Requirements include high accuracy, reliability, mobility, concealment, and optics, for anti-personnel weapon, anti-personnel, anti-materiel rifle, anti-materiel and sur ...
and
Heckler & Koch 93 semi-automatic rifle in 5.56mm for
counter-sniper roles. Throughout the 1970s, the branch increased in size, with additional firearms instructors being recruited to meet the increase in the demand for firearms training. During the 1970s, D11 officers qualified their students in the
Smith & Wesson Model 36 and the
Model 10 revolvers.
1980–1999
In response to operational demands, the department underwent restructuring in 1987 becoming PT17 (Personnel & Training) and the introduction of non-instructors who formed level 2 teams. Their role was to deal with pre-planned and response operations not involving hostages or suspects with 'exceptional firepower'. These tasks remained the responsibility of the teams of Instructors who became Level 1 teams. In 1991 following the shooting and stabbing of several police officers, the
armed response vehicles (ARVs) were introduced, with their concept influenced by
West Yorkshire Police's ''Instant Response Cars'', as used in 1976. The vehicles were put under the control of the unit drastically increasing its manpower and necessitating its move to Specialist Operations and a new designation of SO19, the Force Firearms Unit.
Following their success, forces outside of the capital later formed them throughout the early to mid-1990s.
Early ARVs contained a secure safe between the seats containing a
.38 Smith & Wesson Model 10
The Smith & Wesson Model 10, previously known as the Smith & Wesson .38 Hand Ejector Model of 1899, the Smith & Wesson Military & Police or the Smith & Wesson Victory Model, is a K-frame revolver. In production since 1899, the Model 10 is a six-s ...
for each member, with two
9 mm Heckler & Koch MP5 semi-automatic carbine
A carbine ( or ) is a long gun that has a barrel shortened from its original length. Most modern carbines are rifles that are compact versions of a longer rifle or are rifles chambered for less powerful cartridges.
The smaller size and ligh ...
s secured in the boot. After ARVs became established, and the practice was accepted for widespread use, the Model 10
revolver
A revolver is a repeating handgun with at least one barrel and a revolving cylinder containing multiple chambers (each holding a single cartridge) for firing. Because most revolver models hold six cartridges before needing to be reloaded, ...
s were replaced by more recent
self-loading
A semi-automatic firearm, also called a self-loading or autoloading firearm (automatic firearm, fully automatic and selective fire firearms are also variations on repeating firearm#Autoloading, self-loading firearms), is a repeating firearm who ...
Glock 17s, firing 9 mm rounds.
Revolvers and pistols could be removed from the secure safe by ARV members, if an "immediate threat to life" was posed, in the opinion of the ARV member. Authorisation to remove carbines required authorisation from the control room once they had contacted an officer of
Association of Chief Police Officers
The Association of Chief Police Officers of England, Wales and Northern Ireland (ACPO) was a not-for-profit private limited company that for many years led the development of policing practices in England, Wales, and Northern Ireland. Established ...
(ACPO) rank. If a high-ranking officer could not be sought to gain authorisation, such could be given by a
Chief Inspector in an emergency. In recent years ARV members have carried their personal pistols on them as a matter of routine.
2000–present
ARV officers provided rapid response to spontaneous firearms incidents, such as armed robberies, being the first such organised system the capital had witnessed. Early ARV officers were issued with
Smith & Wesson Model 10
The Smith & Wesson Model 10, previously known as the Smith & Wesson .38 Hand Ejector Model of 1899, the Smith & Wesson Military & Police or the Smith & Wesson Victory Model, is a K-frame revolver. In production since 1899, the Model 10 is a six-s ...
s, with others being trained in the use of the
Heckler & Koch MP5 semi-automatic carbine. The Model 10 was later replaced by the Glock 17 semi-automatic pistol. Following a further reorganisation in 2005, SO19 became CO19, due to the department's move to the
Central Operations Directorate; at the same time, the department was renamed from the
Force Firearms Unit to the Specialist Firearms Command.
The unit maintained its training role and continued to train the Met's 4,800 officers who were redesignated as
authorised firearms officers (AFOs). The level 2 officers underwent enhanced training and those that passed joined selected Level 1 instructors to become Specialist Firearms Officers (SFOs). SFO teams replaced the old Level 1 and 2 structure becoming full-time tactical teams dealing with all pre planned armed operations (robbery ambushes, warrant service and hostage situations etc.) within the Met and providing specialist support to the ARVs.
In January 2012 the branch underwent another name change, becoming SCO19 due to the merger of Central Operations (CO) and Specialist Crime Directorate (SCD) to form Specialist Crime & Operations. Since then SCO19 has again been re-designated as MO19, a result of the 2018–19 restructuring, putting it under Met Ops while maintaining the title of SCO19.
Current role
All aspects of armed policing in the UK are covered by guidance issued by the
Association of Chief Police Officers
The Association of Chief Police Officers of England, Wales and Northern Ireland (ACPO) was a not-for-profit private limited company that for many years led the development of policing practices in England, Wales, and Northern Ireland. Established ...
in their ''Manual of Guidance on the Police Use of Firearms''. This manual provides an overview of the basic principles such as rules of engagement and tactics involved in the use of firearms by police officers in different environments along with details of command structures that are in place in all planned and spontaneous firearms operations.
Training

As of 2007, the Command is responsible for training the 2,594 AFOs of the
Metropolitan Police Service (MPS). These include officers from
Protection Command
The Protection Command is one of the commands within the Specialist Operations directorate of London's Metropolitan Police Service. The command specialises in protective security and has two branches: Royalty and Specialist Protection (RaSP), pr ...
,
Counter Terrorism Command, the
Aviation Security Operational Command Unit, the
Flying Squad (SCD7 ">, the
Territorial Support Group and the armed officers from MO19 itself.
Potential AFOs are invited to attend the Training Centre after they have undergone the written tests and interviews, and successfully completed their probationary period with a further two years in a core policing role. They undergo two weeks of intensive training on the Glock 17 Pistol and the Heckler & Koch MP5 carbine; both weapons use 9mm rounds.
This is followed by a further nine weeks of training focused on ARV tactics and searching buildings.
Based at MPSTC, MO19 provides initial and continuation training for all MPS firearms officers. There are more than twenty courses provided by nationally accredited firearms instructors. Courses are based on the National Firearms Training Curriculum, to cover the variety of roles covered by AFOs in the MPS. The courses range from firepower demonstrations (to highlight the dangers of firearms to new MPS recruits) and initial firearms courses, to Operational Firearms Commander (OFC) training and National Firearms Instructor courses. There were 683 courses run at MPSTC in the 2006–07 financial year.
Current organisation
MO19 currently has two tiers of armed officers.
Armed response vehicles (ARVs)
The first tier is the armed response vehicle, or ARV. Commonly referred to as the Trojans, ARVs are responsible for patrolling the city and to provide immediate armed support to other police units. ARVs conduct targeted patrols of high crime areas, and are trained to engage in high speed pursuits.
Each ARV is crewed by 3 armed response officers: driver, communications operator and observer/navigator.
Counter Terrorist Specialist Firearms Officers (CT-SFO)

The highest tier is the
Counter Terrorist Specialist Firearms Officer teams, which deal with MPS operations and also national firearms operations as part of the CTSFO Network.
They provide firearms support to borough and specialist units.
They are multi-skilled and can deliver all elements of armed policing, including operations to combat major crime, hostage taking and terrorism.
MO19 has seven CTSFO teams consisting of one sergeant and 15 constables, both male and female, with six CTSFO Inspectors and an Operational Senior Manager with a reported strength of 130 officers.
An operational CTSFO team works a 7-week shift-pattern which includes night duty.
CTSFO teams are able to be deployed by air or the river, using armoured vehicles and motorcycles if needed. On 28 July 2014, the single armed response vehicle service was launched.
In preparation for the
Summer Olympics
The Summer Olympic Games, also known as the Summer Olympics or the Games of the Olympiad, is a major international multi-sport event normally held once every four years. The inaugural Games took place in 1896 in Athens, then part of the King ...
held in
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
in July 2012, officers were up-skilled from SFO standard, to a new certification known as Counter Terrorist Specialist Firearms Officer (CTSFO).
This included the use of live rounds during
close quarters combat (CQC) training and
fast-roping
Fast-roping is a technique for descending a thick rope, allowing troops to deploy from a helicopter in places where the aircraft cannot touch down.
The person holds onto the rope with gloved hands (with or without using their feet) and slides do ...
from
helicopters
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attribu ...
, to be able to respond more effectively to terrorist incidents.
The training was conducted jointly with the
United Kingdom Special Forces.
On 30 June 2015, CTSFO teams participated in ''Operation Strong Tower'' held in London, the largest counter-terrorism exercise conducted in the United Kingdom. The MPS released statistics that between January 2015 and December 2015 CTSFO teams were involved in 144 operations.
On 3 August 2016, the MPS held a press conference for the announcement of ''Operation Hercules'', displaying the CTSFO teams to the public wearing wolf-grey-coloured tactical uniforms, equipped with
SIG Sauer SIG516 and
SIG MCX carbines,
Glock 17 handguns,
Remington 870 shotgun,
Accuracy International AT308 sniper rifle, and paraded the
BMW F800GS motorcycles used for deployments in central London.
On 19 March 2017, CTSFO teams participated in maritime ''Exercise Anchor'' on the
River Thames
The River Thames ( ), known alternatively in parts as the The Isis, River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the Longest rivers of the United Kingdom, s ...
, their first joint major live-play exercise. On 22 March 2017, CTSFO teams rapidly deployed to the
2017 Westminster attack
On 22 March 2017, a Terrorism, terrorist attack took place outside the Palace of Westminster in London, seat of the Parliament of the United Kingdom, British Parliament. Khalid Masood, a 52-year-old British people, Briton, Vehicle-ramming attac ...
.
CTSFO teams use the
Jankel Guardian armoured vehicle based on a
Ford F-450
The Ford Super Duty (also known as the Ford F-Series Super Duty) is a series of heavy-duty pickup trucks produced by the Ford Motor Company since the 1999 model year. Slotted above the consumer-oriented Ford Ford F-Series, F-150, the Super Duty ...
chassis, as well as various other unmarked vehicles, including
Toyota Land Cruisers,
BMW X5s and
Land Rover Discoveries.
The CTSFO training facilities at the MPS Specialist Training Centre includes indoor and outdoor live-fire shooting ranges, an assault house for practising method of entry (MOE) techniques and train, subway and aircraft mock-ups.
CTSFOs volunteers are recruited from serving ARV officers. A candidate has to be recommended by their supervisor, undertake a two-day assessment and pass both shooting and physical standards. If candidates pass this stage they will then be offered a place on a CTSFO course where they will begin to up-skill to their new role.
Equipment
Firearms
As of April 2019, the following firearms are in use by the Specialist Firearms Command:
Less lethal
Officers are also equipped with the non-lethal
Taser X26s and X2s. All officers are also issued with the same basic equipment as other police officers, which includes ASP
Baton,
CS Gas
The compound 2-chlorobenzalmalononitrile (also called ''o''-chlorobenzylidene malononitrile; chemical formula: C10H5ClN2), a cyanocarbon, is the defining component of the lachrymatory agent commonly referred to as CS gas, a tear gas which ...
,
Speedcuffs, and radios.
Body armour
MO19 officers are equipped with
bulletproof vests, instead of the standard
stabproof vest which only has low-level ballistic capability.
List of operations
Notable operations and incidents involving officers from the SFC:
*
Spaghetti House siege (1975)
*
Iranian Embassy siege
The Iranian Embassy siege took place from 30 April to 5 May 1980, after a group of six armed men stormed the Embassy of Iran, London, Iranian embassy on Prince's Gate in South Kensington, London.
The gunmen, Iranian Arabs campaigning for th ...
(1980)
*
Northolt siege (1985)
*
Shooting of Diarmuid O'Neill (1996)
*
Shooting of Harry Stanley (1999)
*
Millennium Dome raid (2000)
*
Hackney siege
The Hackney siege was a criminal event that took place in Hackney, London, Hackney, in East London, England, for 15 days from 26 December 2002 to 9 January 2003. It ended with the death of the gunman, Eli Hall.
Background
Eli Hall, born in Jamaic ...
(2002–2003)
*
Shooting of Azelle Rodney (2005)
*Manhunt following
21 July 2005 London bombings
On 21 July 2005, four attempted bomb attacks by four Islamism, Islamist extremists disrupted part of London's public transport system as a follow-up attack to the 7 July 2005 London bombings two weeks earlier. The explosions occurred around mid ...
(2005)
*
Shooting of Jean Charles de Menezes (2005) (related to above, although the wrong person was shot)
*
Forest Gate raid (2006)
*
Chandler's Ford shooting (2007)
*
Shooting of Mark Saunders (2008)
*
Shooting of Mark Duggan (2011)
*
Westminster terrorist attack (2017)
*
London Bridge terrorist attack (2017)
*
London Bridge stabbing (2019)
*
Streatham stabbing (2020)
See also
*
Police use of firearms in the United Kingdom
*
Firearms unit
*
Authorised firearms officer
References
Further reading
*
*
*
*
*
*
{{Metropolitan Police Service
ATLAS Network
Metropolitan Police units
Non-military counterterrorist organizations
Police tactical units