7
Chapter 1: Have body worn cameras been proven to be effective?
Supporters and enthusiasts of body worn cameras say the technology will improve and enhance
transparency in frontline policing, reduce the length of time it takes to prosecute criminals, and offer
greater protection from inappropriate or violent behaviour for both police officers and members of
the public.
Senior police figures across the UK have publicly supported the roll out of the technology.
Ron Hogg, Police and Crime Commissioner for Durham Constabulary, said in 2014 “The effective use
of these cameras will promote public reassurance, capture best evidence, prevent harm and deter
people from committing crime and anti-social behaviour.”
Whilst Andy Marsh, Chief Constable of Avon and Somerset Constabulary and the National Police
Lead for Body Worn Cameras, argued in the summer of 2016 that “When an officer wears a camera,
the evidence captured is often much higher quality. I have seen earlier admissions and quicker pleas,
together with better informed sentences and sanctions from courts.”
But has research into the use of body worn cameras proven these assertions to be accurate?
In 2016 the Metropolitan Police began what they described as “the largest rollout of body worn
cameras by police anywhere in the world.”
Before the roll out was approved, the Metropolitan
Police, alongside the London Mayor’s Office for Policing and Crime and the College of Policing
undertook a Home Office funded trial of body worn cameras. The trial covered the use of 500
cameras by 814 officers.
The findings of the trial
showed the technology had little-to-no impact on several elements of police
work. The report revealed:
“no overall impact” on the “number or type of stop and searches” conducted;
“no effect” on the proportion of arrests for violent crime; and
“no evidence” that the cameras changed the way officers dealt with either victims or
suspects.
Whilst the report identified a reduction in allegations from the public against officers when they
wore the cameras, it was noted that figures “did not reach statistical significance”
and merely
matched the overall downward trend in complaints the police were experiencing irrespective of the
use of the technology.
Despite the trial failing to provide a mandate, the Metropolitan Police proceeded to spend over
£15,000,000 on 22,000 cameras – which were rolled out within the year. The rollout was greeted
Durham Constabulary, Force rolls out hundreds more bodycams, 5
th
June 2014: https://www.durham.police.uk/news-and-
events/Pages/News%20Articles/Force-rolls-out-hundreds-more-bodycams.aspx
Avon & Somerset Police & Crime Commissioner, Body Worn Video Cameras Set To Launch In Avon and Somerset, 18
th
July
2016: http://www.avonandsomerset-pcc.gov.uk/News-and-Events/News-Archive/2016/July/Body-worn-video-cameras-
set-to-launch-in-Avon-and-Somerset.aspx
Metropolitan Police Service, Rollout of body worn cameras, 17
th
October 2016: http://news.met.police.uk/news/rollout-
of-body-worn-cameras-191380
L Grossmith, C Owen, W Finn, D Mann, T Davies, L Baika, Police, Camera, Evidence: London’s cluster randomised controlled
trial of Body Worn Video, November 2015, p. 13:
https://www.london.gov.uk/sites/default/files/bwv_report_nov_2015.pdf
ibid