But if the suspect had proved a serious threat to himself or others, the eight-man Emergency Response Team (ERT) would have stepped in.

There are two teams, called out once or twice a month for high-risk arrest warrants, all armed with the ultra-reliable and accurate Heckler and Koch machine pistols known as the MP5.

Although it must be set to fire only single rounds for Police work, the nine-millimetre MP5 can be set to fire in bursts or to empty its 30-bullet chamber in seconds.

ERT officers also carry light-weight plastic Glock pistols strapped to their legs.

Included in the ERT armoury is the Arwen 37, described as the "less lethal option'', which fires plastic batons to knock people over before an arrest is made.

Tear gas, which causes stinging and itching in the eyes and throat, is also an option to temporarily disable suspects, but some are immune to its affects.

Officers are also equipped with bullet proof vests and helmets made from Kevlar, a super-strong fabric.