UK Police Deploy Live Facial Recognition to Make Arrests
UK police forces have deployed live facial recognition technology to make arrests, scanning thousands of faces per hour in town centres. Civil liberties advocates have raised concerns about privacy violations, racial bias and lack of democratic oversight, while police assert the technology is effective for catching criminals.
What happened
Live facial recognition (LFR) technology has been deployed by UK police forces since 2020, initially in London and subsequently across other cities. The system uses high-definition cameras mounted on police vans and lamp-posts to scan passing faces and compare them in real time against watchlists of wanted suspects and people under court orders.
During a six-month pilot in Croydon, London, the Metropolitan Police used LFR cameras supplied by Japanese tech company NEC to make hundreds of arrests. Police received alerts on handheld devices when faces matched wanted persons, allowing officers to apprehend suspects within minutes of identification.
The Labour government has announced 40 new vans equipped with live facial recognition cameras to be deployed in town centres across England and Wales, describing the technology as 'the biggest breakthrough for catching criminals since DNA matching.'
Reported impact
Critics have called the technology invasive, unregulated and anti-democratic, and have cited studies suggesting racial bias in the system. Opponents fear the technology violates civil liberties and can discriminate against minorities.
The system scans thousands of faces per hour, capturing biometric data from pedestrians without prior notification. Images of people not matched to wanted lists are permanently deleted, but the mass surveillance raises concerns about privacy and oversight.
Index analysis
The technology operates by superimposing facial images, measuring angles and distances between facial landmarks, and using AI-powered software to compare captured faces against police watchlists in real time. The system integrates data from multiple sources including CCTV, mobile phones, dashcams, social media and doorbell cameras.
At the British Grand Prix at Silverstone since 2023, Northamptonshire police scanned nearly one million faces over a few days, generating zero alerts. This raises questions about the technology's effectiveness and the necessity of mass surveillance operations.
Governance controls
Trials are under way in which facial recognition cameras are fixed to lamp-posts in addition to police vans, expanding surveillance coverage. Cameras are typically switched on for three- to four-hour spells in busy town centres and at large events.
The Metropolitan Police Commissioner has described the technology as 'gamechanging' and stated it keeps the public safe, but formal oversight mechanisms and legal safeguards for the technology have not been detailed in available accounts.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.