🔗 Share this article British Law Enforcement Agencies Lobbied to Employ Discriminatory Face Scanning Systems Police forces across the United Kingdom effectively campaigned to deploy a facial recognition system acknowledged as biased against women, youths, and members of minority ethnic backgrounds, following complaints that a more accurate version generated fewer investigative leads. How the System Works UK forces use the national police database to conduct searches using historical face recognition. This procedure involves matching a reference photograph of a person of interest against a repository of over 19 million custody photos to identify possible hits. Acknowledged Discrimination The Home Office conceded last week that the system was flawed. This admission followed a study by the government's National Physical Laboratory determined it misidentified Black and Asian people and women at much greater frequency than white men. The ministry said it “had acted on the findings”. “It prompts the question of whether facial recognition only becomes effective if users tolerate biases in ethnicity and sex. Operational ease is a weak argument for disregarding fundamental rights.” Long-Standing Problem Official papers show that this bias has been known about for over twelve months. Furthermore, police forces lobbied to reverse an earlier ruling that was designed to mitigate the problem. Police bosses were informed of the algorithmic discrimination in September 2024. The Home Office-commissioned laboratory study concluded the system was more likely to produce false positives for images depicting females, individuals of Black ethnicity, and those aged 40 and under. A Reversed Decision In response, the National Police Chiefs’ Council (NPCC) ordered that the confidence threshold required for possible hits be raised to a point where the bias was significantly reduced. However, this directive was overturned the next month after forces complained that the modified technology was generating fewer “investigative leads”. Internal records show the stricter setting cut the proportion of queries resulting in possible identifications from over half to a mere 14%. Severe Disparities Although the Home Office and NPCC declined to specify what setting is currently used, the recent NPL study discovered the system could produce false positives for Black women nearly a hundred times more often than for Caucasian women at certain settings. The Home Office commented on these results: “The testing found that in a specific scenarios the algorithm is has a greater tendency to incorrectly include some population segments in its search results.” Operational Effectiveness vs. Bias Outlining the effect of the brief increase to the system's confidence threshold, the NPCC documents state: “This adjustment greatly lessens the impact of bias across legally safeguarded attributes of race, age and gender but had a significant negative impact on police efficiency”. The documents further note that forces argued that “a once effective tactic now delivered results of questionable value”. Wider Implementation Proposals Meanwhile, the government has opened a two-and-a-half-month consultation on its plans to widen the use of facial recognition technology. The minister for police Sarah Jones has described the technology as the “biggest breakthrough since DNA matching”. Expert and Oversight Concerns The chair of a police oversight board, chair of the independent scrutiny and oversight board for the national policing equality strategy, said: “We observed very little discussion through race action plan meetings of the technology deployment despite clear relevance with the plan’s concerns. “These revelations show once again that the pledges to combat discrimination policing has undertaken via the equality initiative are failing to be integrated into broader operations. Our reports have warned that innovative tools are being rolled out in a context where ethnic inequalities, weak scrutiny and faulty information gathering already persist. “All deployment of facial recognition must adhere to strict national standards, be independently scrutinised, and demonstrate it diminishes rather than exacerbates racial disparity.” Home Office Response A Home Office spokesperson stated: “We takes the conclusions of the study with utmost gravity and we have implemented changes. A updated software has been independently tested and procured, which has demonstrated no measurable discrimination. It will be tested early next year and will be undergo further assessment. “Our priority is ensuring public safety. This gamechanging technology will assist police to apprehend and prosecute offenders. There is human involvement in each stage of the process and no arrest or charge would be taken without trained officers carefully reviewing the results.”