The deaths of two female police constables have brought into focus the unarmed status of most British police. Why does Britain hold firm against issuing guns to officers on the beat?
It's the single most obvious feature that sets the British bobby apart from their counterparts overseas.
Tourists and visitors regularly express surprise at the absence of firearms from the waists of officers patrolling the streets.
But to most inhabitants of the UK - with the notable exception of Northern Ireland - it is a normal, unremarkable state of affairs that most front-line officers do not carry guns.
Unremarkable, that is, until unarmed officers like Nicola Hughes and Fiona Bone are killed in the line of duty. There are always those who question why Britain is out of step with most of the rest of the world, with the exceptions of the Republic of Ireland, New Zealand, Norway and a handful of other nations.
View from a bobby
A police constable serving in a city in southern England gives his view:
"I have been in the police for 12 years, before that I was in the Army. I would happily carry a gun if the decision was made but it won't ever happen.
"I don't think practically it could work because of the training. Officers in this country are highly trained and this would extend to firearms training, too. But, at the moment, with all the cuts, we can't put enough officers in the cars, let alone give them firearms training.
"Also, the police in this country are always under so much scrutiny. Look at the issue of Tasers, the civil liberty groups think they are one of the most inhumane things going.
"I was previously injured badly in an assault. My colleague and I feared for our lives - thankfully other officers came to our aid. I don't think a gun - or a Taser for that matter - would have helped us in that situation. Communication is one of the best tools, and to be honest, having a gun could make an officer feel over-confident."
For a heavily urbanised country of its population size, the situation in Great Britain is arguably unique.
Film director Michael Winner, founder of the Police Memorial Trust, and Tony Rayner, the former chairman of Essex Police Federation, have both called for officers to be routinely armed.
But despite the loss of two of his officers, Greater Manchester Chief Constable Sir Peter Fahy was quick to speak in support of the status quo.
"We are passionate that the British style of policing is routinely unarmed policing. Sadly we know from the experience in America and other countries that having armed officers certainly does not mean, sadly, that police officers do not end up getting shot."
But one thing is clear. When asked, police officers say overwhelmingly that they wish to remain unarmed.
A 2006 survey of 47, 328 Police Federation members found 82% did not want officers to be routinely armed on duty, despite almost half saying their lives had been "in serious jeopardy" during the previous three years.
It is a position shared by the Police Superintendents' Association and the Association of Chief Police Officers.
The British public are not nearly so unanimous.ICM poll (see page two) [106KB]
In 2007, the centre-right think-tank Policy Exchange found 72% of 2, 156 adults wanted to see more armed police patrols.
All major police forces in Europe, as well as the US, Canada and Australia routinely carry firearms, says Prof Peter Waddington. The exceptions are Britain, the Irish Republic, and New Zealand. In Norway officers carry arms in their cars but not on their person, he says.
New Zealand has adopted an armed response model similar to Britain, says the International Law Enforcement Forum. There was considerable debate there in 2010 when two officers were shot, and commissioner Peter Marshall wrote: "International experience shows that making firearms more accessible raises certain risks that are very difficult to control."
These considerations included:
• risk of police having weapons taken from them
• risk of greater use of weapons against the public and/or offenders
• and ambush can never be controlled, whether or not officers are armed
For decades there have been incidents that have led to calls for issuing all officers with firearms. Cases like those of Sharon Beshenivsky, shot dead during a robbery in 2005, or of the three plain-clothes officers murdered by Harry Roberts in west London in 1966, or the killing of PC Sidney Miles in the Derek Bentley case of 1952.
Few expect the system to change even after widespread public horror at the deaths of PCs Bone and Hughes.
For one thing, incidents such as that in Greater Manchester are extremely rare. Overall gun crime, too, remains low.
In 2010-11, England and Wales witnessed 388 firearm offences in which there was a fatal or serious injury, 13% lower than the previous 12 months. In Scotland during the same period, there were two fatal and 109 non-fatal injuries during the same period, a decade-long low.
Additionally, officers, chief constables and politicians alike are wary of upsetting an equilibrium that has been maintained throughout Britain's 183-year policing history.
"There's a general recognition that if the police are walking around with guns it changes things, " says Richard Garside, director of the Centre for Crime and Justice Studies.
Arming the force would, say opponents, undermine the principle of policing by consent - the notion that the force owes its primary duty to the public, rather than to the state, as in other countries.
This owes much to the historical foundations of British criminal justice, says Peter Waddington, professor of social policy at the University of Wolverhampton.
"A great deal of what we take as normal about policing was set out in the early 19th Century, " he says.
Police use of firearms 2010-11
- Authorised in 17, 209 operations, says Home Office figures for England and Wales - a decrease of 1, 347 (7%) on previous year
- 6, 653 authorised firearms officers - (5% decrease)
- 13, 346 operations involving armed response vehicles (6% decrease)
- Three incidents in which police discharged a conventional firearm (down from six incidents)
"When Robert Peel formed the Metropolitan Police there was a very strong fear of the military - the masses feared the new force would be oppressive."
A force that did not routinely carry firearms - and wore blue rather than red, which was associated with the infantry - was part of this effort to distinguish the early "Peelers" from the Army, Waddington says.
Over time, this notion of guns being inimical to community policing - and, indeed, to the popular conception of the Dixon of Dock Green-style bobby - was reinforced.
While some in London were issued with revolvers prior to 1936, from that date only trained officers at the rank of sergeant or above were issued with guns, and even then only if they could demonstrate a good reason for requiring one.
Today only a small proportion of officers are authorised to use firearms. Latest Home Office figures show there were just 6, 653 officers authorised to use firearms in England and Wales - about 5% of the total number.Home Office statistics on police firearms use, 2010-11 [317KB]
None of which implies, of course, that the British police are somehow gun-free. Each police force has its own firearms unit. Police armed response vehicles have been deployed since 1991.
View from Louisiana
By Colonel Richie JohnsonWest Baton Rouge Sheriff's Office
"What does a British police officer do if someone comes out with a knife? Is he supposed to get out his knife and fight him?
"Our citizens are armed - even the bad ones. The criminal element here is better armed than the police departments most of the times, due to budget constraints.