LONDON
Reporters traveling with officers from the Metropolitan Police Service's Specialist Firearms Command—known internally as MO19—witnessed the unit absorb the news that one of their colleagues faced a murder charge over the death of Chris Kaba, a 24-year-old shot and killed in Streatham Hill in south London in 2021.
The charge has placed sustained pressure on a command that operates in conditions most of the Met's unarmed officers never encounter. MO19, formed in 2005 with institutional roots reaching back to 1966, is responsible for providing the Metropolitan Police's firearms-response capability across London. The wider force does not routinely carry weapons, leaving MO19 as the specialist tier activated for armed incidents, counter-terrorism operations and high-risk protective duties.
As of 2007, the command trained 2,594 authorized firearms officers across the Metropolitan Police Service. That total includes personnel drawn from the Protection Command, the Counter Terrorism Command, the Aviation Security Operational Command Unit, the Flying Squad and the Territorial Support Group, as well as MO19's own armed officers.
Within MO19, the highest-tier designation belongs to Counter Terrorist Specialist Firearms Officers. CTSFOs carry out national firearms operations as part of Britain's broader counterterrorism apparatus and provide armed support to other specialist units. They are trained across all elements of armed policing and deploy on operations that extend beyond London.
Operational command during incidents follows the Metropolitan Police's Gold-Silver-Bronze structure. MO19's tactical commanders—typically at Inspector or Superintendent rank—serve as Bronze leads for firearms-specific elements, reporting upward to Silver coordinators from the requesting unit and then to Gold strategists at force level. Separate subordinate strands covering armed response vehicles, specialist intervention teams and counter-terrorist officers are each led by a Superintendent.
The unit's day-to-day work requires medical response as frequently as it does weapons use. Journalists traveling with MO19 officers on callouts observed that first-aid delivery was a more common demand than drawing a firearm. Officers are trained for both, but the balance of their work skews heavily toward non-lethal intervention.
Research into the command's internal culture has documented a working environment that is 90 percent white and male. Academics who examined MO19 found that aggressive street-police culture shaped the unit's norms and that officers broke rules with relative impunity. A widely held view inside the command, and across parts of the broader Met, held that firearms officers needed to be permitted to bend or break rules because they serve as volunteers who can withdraw from armed duties at any point by surrendering what is known as their blue card—the authorization to carry a weapon.
That culture of perceived exception has drawn renewed attention since the charge against the officer involved in Kaba's death. The circumstances of that shooting have been the subject of sustained legal proceedings and public debate about the standards applied to armed officers.
The Metropolitan Police's history with firearms authorization is long and contentious. The force did not carry weapons at its founding in 1829, though the Home Secretary later authorized the Commissioner to purchase 50 pairs of flintlock pistols for emergencies. In 1867, following the Clerkenwell bombing, 622 Beaumont-Adams revolvers firing the.450 cartridge were loaned from army stores at the Tower of London. A ballot in 1883 found that 70 percent of the 6,325 officers serving in outer divisions wanted to carry revolvers. The first recorded instance of a Met officer firing a revolver on duty came on Feb. 18, 1887, when PC 52206 Henry Owen discharged his weapon while attempting to alert residents of a burning building.
The authorization for outer-district officers to carry revolvers was revoked in 1936. A thousand self-loading Webley Scott pistols had been purchased after the 1911 Siege of Sidney Street. Lord Trenchard later standardized firearm allocations by station size: divisional stations received 10 pistols with 320 rounds, sub-divisional stations received six pistols with 192 rounds and section stations received three pistols with 96 rounds.
The charge in the Kaba case—murder, not a lesser firearms offense—set a threshold that armed-policing advocates have said discourages officers from making split-second decisions under threat. MO19 officers the journalists traveled with absorbed that tension directly. The unit's members are acutely aware that every deployment carries legal consequence, and that the volunteer nature of armed duty means the charge against their colleague reverberated through a force that relies on officers choosing to carry weapons, rather than being ordered to do so.
