The Metropolitan Police are employing cutting-edge Live Facial Recognition (LFR) technology, utilizing mobile CCTV vans and artificial intelligence to identify and apprehend individuals on a watchlist of wanted persons. This technology compares the biometric data of passers-by with a database of people sought for crimes, court abscondments, or breaches of restraining orders.
Since its introduction in 2014, LFR has contributed to a significant increase in arrests. In 2014, the Met reported 574 arrests using LFR. This number rose to 1,135 in the following year, and approximately 900 arrests had been made by mid-2026. The technology is credited with helping to keep the public safe by apprehending individuals for offenses ranging from robbery and stalking to more serious crimes.
LFR technology uses mobile van-based CCTV cameras to capture images of individuals. AI then analyzes these images, comparing facial features against a watchlist. If a match is found with a predetermined certainty level, local officers are alerted to apprehend the individual. If the identified person is wanted for a serious offense or a breach of an order related to violence against women and girls, they are arrested on the spot. Data on individuals not on the watchlist is deleted immediately.
Expansion and Concerns
The UK Home Secretary has expressed support for expanding the use of LFR, with plans to increase the number of mobile LFR vans nationwide. However, this technological advancement has drawn criticism from civil liberties campaigners who fear it erodes privacy and anonymity. Critics argue that the rapid deployment of LFR has outpaced the establishment of specific legislation to govern its use, leaving a gap in regulatory oversight.
Concerns have been raised regarding the potential for misuse, particularly in the long term, and the implications for democratic societies if such technology were to fall into the hands of authoritarian regimes. The accuracy of facial recognition systems, particularly retrospective analysis, has also been questioned, with studies indicating higher rates of false positives for individuals from Black and Brown communities, and particularly for Black women.
Past Use and Future Legislation
LFR technology was first trialed in the UK in 2015 and has since been adopted by over a dozen police forces. Notable deployments include the Notting Hill Carnival, where LFR led to 61 arrests and checks on registered sex offenders, and a trial in Croydon which saw 173 arrests and a reported reduction in crime. The technology has also been used in successful interventions, such as the apprehension of a registered sex offender who was in breach of a prevention order, potentially preventing harm to a child.
In response to these developments, the government has indicated plans to introduce a new legal framework for the use of facial recognition technology, aiming to provide clarity on its application and limitations. However, the specifics of this legislation and its timeline remain uncertain, with discussions ongoing about policy details and the need for independent oversight. Until then, police forces are operating under guidelines influenced by court rulings, navigating a landscape where the technology is permissible unless proven illegal. The ongoing debate centers on balancing the effectiveness of LFR in combating crime with the fundamental rights to privacy and civil liberties.