Operation Temperer

Operation Temperer
Name	Operation Temperer
Partof	Terrorism in the United Kingdom
Date	2015–present
Location	United Kingdom
Objective	Augment armed policing following terrorist attacks
Outcome	Temporary reinforcement of Police Service of Northern Ireland and Metropolitan Police Service armed units

Operation Temperer is a United Kingdom domestic security protocol designed to temporarily deploy military personnel to support United Kingdom police forces in the aftermath of major terrorist attacks or credible threats. It provides a framework for transferring trained British Army personnel into uniformed armed roles alongside or under the control of civilian territorial police forces to free specialist police firearms units for investigation and response tasks. The measure was developed amid heightened concern following high-profile incidents in London, Manchester, and elsewhere, and sits alongside other UK counter-terrorism arrangements such as CONTEST (counter-terrorism strategy) and Operation Temperer-adjacent protocols.

Background

Operation Temperer originated from lessons drawn after the 2013 Woolwich attack, the 2015 Paris attacks, and the 2017 Westminster attack, when questions arose about the resilience of armed policing in the United Kingdom. Key participants in the development included the Home Office (United Kingdom), the Ministry of Defence (United Kingdom), the Metropolitan Police Service, and regional forces such as Greater Manchester Police and the West Midlands Police. Influential reports and inquiries by figures connected to MI5, Scotland Yard, and parliamentary committees on National Security Council (United Kingdom) business informed the policy; comparisons were often drawn with responses after the 2011 Norway attacks and countermeasures used during the 2005 London bombings.

Activation and Implementation

Activation of Operation Temperer requires authorization at ministerial level, typically by the Home Secretary (United Kingdom) in consultation with the Defence Secretary (United Kingdom) and senior police chiefs including the Commissioner of Police of the Metropolis. Once activated, units from the British Army—notably from formations such as the Household Division, Royal Military Police, and infantry battalions—are made available to take up armed static security roles at locations including Palace of Westminster, transport hubs like Heathrow Airport, and key public venues such as Manchester Arena. Implementation follows joint operating procedures agreed in memoranda between the Ministry of Defence (United Kingdom) and police services, with military personnel wearing specific identification and working to policing tasking while remaining under military command structures for discipline and legal status.

Units and Command Structure

Deployed units have typically comprised soldiers drawn from regular units such as the Royal Regiment of Fusiliers, Grenadier Guards, and reserve formations including the Army Reserve (United Kingdom). Command relationships are dual-hatted: day-to-day direction of armed static posts is exercised by senior police officers—often officers from Counter Terrorism Command—while military chain-of-command remains through regimental officers and the Ministry of Defence (United Kingdom). Liaison is maintained with national coordinating bodies like the National Police Chiefs' Council and the Joint Terrorism Analysis Centre to align threat assessments with deployment posture.

Legal and Policy Framework

The legal basis for military assistance to police under Operation Temperer rests on statutory provisions governing military aid, conventions such as the Civil Emergency arrangements, and ministerial authorizations, including the Civil Contingencies Act 2004 and standing Defence Guidance. Rules on the use of force by military personnel in support of policing reference the Armed Forces Act 2006 and police use-of-force protocols from bodies like the College of Policing. Policy documents from the Home Office (United Kingdom) and the Ministry of Defence (United Kingdom) outline limits on duties—primarily fixed-site security rather than investigative detention—and stipulate training standards aligned with expectations from the Independent Office for Police Conduct and parliamentary oversight by the Home Affairs Select Committee.

Notable Deployments

Operation Temperer was activated following the 2017 Manchester Arena bombing and the 2017 London Bridge attack, with military personnel deployed to supplement armed policing at embassies, transport nodes such as King's Cross railway station, and civic landmarks including Buckingham Palace. Targets of temporary reinforcement also included sporting venues during major events like matches at Wembley Stadium and state occasions at locations tied to the Royal Family and the Prime Minister of the United Kingdom’s residence at 10 Downing Street. Deployments drew on units stationed at garrisons such as Tidworth Camp and Colchester Garrison.

Criticism and Controversy

Critics from organisations including Liberty (organization), civil liberties campaigners, and some members of the House of Commons raised concerns about the militarisation of public spaces, potential impacts on community relations in areas such as Birmingham and Leeds, and legal ambiguities over the use of force and accountability. Academic commentators referencing the Security Studies literature and comparative studies of gendarmerie models questioned the long-term reliance on military personnel for policing functions. Instances of public unease and media scrutiny highlighted debates involving broadcasters like the BBC and newspapers such as The Guardian and The Daily Telegraph.

Legacy and Impact on UK Security Policy

Operation Temperer influenced subsequent developments in UK security policy by prompting investments in armed policing capacity within forces such as the Metropolitan Police Service and the expansion of specialist units in regions like Scotland and Wales. It also fed into revisions of national counter-terrorism strategies including CONTEST (counter-terrorism strategy), updates to civil-military cooperation doctrine at the Ministry of Defence (United Kingdom), and parliamentary oversight reforms championed by the Home Affairs Select Committee. The protocol remains a contingency instrument informing planning for events such as United Nations Climate Change Conference visits, state ceremonies, and major sporting events.

Category:Counterterrorism in the United Kingdom