Most law enforcement officers are unarmed while on duty. That said, every local police service has its own firearms unit, available only to officers of a certain rank and accreditation for using such arms. These units are only really called upon to respond to major incidents involving shootings, explosives or terrorism.

Given the current climate of civil unrest in some hostile environments, people performing close protection services have a crucial role in conducting risk assessments and ensuring collective public safety.

Large-scale incidents like terrorist incidents and mass shootings are few and far between in the UK, but the severity and impact of certain ones have led to growing concern from certain members of the British public. Many are concerned about their safety, which can lead to them casting aspersions on how armed officers are used. 

For example, in the case of the police officer who was shot dead at the Houses of Parliament during the Westminster terrorist attack, many argue he could have lived had he been armed. However, as the debate continues, the rules on UK firearms are unlikely to change anytime soon.

The recourse to the Protection Command of the London Metropolitan Police is always assessed on a case by case basis, with decisions on deployment made by the Home Secretary. To be approved, the need must be deemed a matter of national interest, a terrorist incident or demonstrate a severe risk to public safety based on gathered intelligence.