Data Card
Essex Police reports 57 arrests after live facial recognition evaluation
A National Physical Laboratory evaluation of the Corsight AI system used by Essex Police reported 57 arrests across 22 live facial recognition deployments.
2026-07-29CC-BY-4.0live-facial-recognitionuk-policingnplevaluation
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Key Facts
- Twenty-two operational deployments screened more than 353,000 faces.
- The system produced 173 positive alerts leading to 143 officer interventions and 57 arrests.
- Evaluators reported no false positives, with the system operating at a matching threshold of 55.
Card Text
Threshold-linked accuracy reporting is what distinguishes an auditable deployment from an unevaluated one, since false positive rates move sharply with the operating point. The National Physical Laboratory's evaluation of the Corsight AI system gives the figures a methodological basis that self-reported vendor numbers lack.