🔗 Share this article UK Police Forces Lobbied to Employ Discriminatory Face Scanning Systems Police forces across the United Kingdom successfully lobbied to deploy a facial recognition system acknowledged as biased against women, youths, and members of ethnic minority groups, following complaints that a more accurate version generated a reduced number of potential suspects. The Technology in Practice British police utilize the police national database (PND) to conduct retrospective facial recognition searches. This process entails comparing a reference photograph of a suspect against a database of more than 19 million mugshots to identify possible hits. Admitted Bias The UK interior ministry admitted last week that the technology was biased. This acknowledgment came after a review by the National Physical Laboratory (NPL) found it misidentified Black and Asian people and women at significantly higher rates than white men. The ministry said it “had acted on the findings”. “It prompts the issue of whether this technology only becomes effective if users accept biases in race and gender. Operational ease is a weak argument for disregarding basic freedoms.” Long-Standing Problem Internal documents reveal that this bias has been recognized for over twelve months. Furthermore, law enforcement lobbied to reverse an earlier ruling that was designed to mitigate the problem. Police bosses were informed of the system's bias in late 2024. The government-ordered laboratory study found the system was more likely to produce false positives for images depicting females, individuals of Black ethnicity, and those under 40 years old. A Reversed Decision In reaction, the National Police Chiefs’ Council (NPCC) ordered that the confidence threshold required for possible hits be increased to a level where the disparity was significantly reduced. However, this directive was overturned the next month following complaints from police that the modified technology was generating fewer “useful lines of inquiry”. Internal records show the stricter setting reduced the proportion of queries resulting in possible identifications from over half to a just under 15%. Profound Inequalities Although the authorities declined to specify what threshold is currently used, the recent NPL study discovered the system could produce false positives for Black women nearly a hundred times more frequently than for Caucasian women at specific configurations. The ministry stated on these findings: “The testing found that in a specific scenarios the algorithm is has a greater tendency to incorrectly include some population segments in its match reports.” Balancing Utility and Fairness Outlining the impact of the temporary raise to the system's accuracy setting, the police records state: “The change significantly reduces the impact of discrimination across protected characteristics of race, age and sex but had a substantially detrimental effect on police efficiency”. The documents add that police units argued that “a previously useful tool returned results of limited benefit”. Wider Implementation Proposals Meanwhile, the government has opened a two-and-a-half-month public review on its proposals to widen the use of facial recognition technology. Policing minister the relevant minister has described the technology as the “most significant advance since DNA matching”. Expert and Oversight Concerns The chair of a police oversight board, chair of the advisory panel for the national policing equality strategy, said: “There was scant consideration through equality strategy sessions of the technology deployment despite clear relevance with the strategy's goals. “This disclosure show yet again that the pledges to combat discrimination policing has undertaken via the race action plan are failing to be integrated into wider practice. Independent assessments have cautioned that new technologies are being implemented in a landscape where ethnic inequalities, inadequate oversight and faulty information gathering already persist. “All deployment of facial recognition must adhere to strict national standards, be subject to external review, and prove it reduces rather than exacerbates racial disparity.” Home Office Response A government representative said: “We takes the findings of the report with utmost gravity and we have already taken action. A updated software has been externally evaluated and acquired, which has no statistically significant bias. It will be tested in the coming months and will be undergo further assessment. “The foremost aim is protecting the public. This revolutionary tool will assist police to put criminals and rapists behind bars. There is human involvement in each stage of the process and no further action would be pursued without trained officers carefully reviewing the results.”