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https://www.theverge.com/2018/7/5/17535814/uk-face-recognition-police-london-accuracy-completely-comfortable

But while facial recognition performs well in controlled environments (like photos taken at borders), they struggle to identify faces in the wild. According to data released under the UK’s Freedom of Information laws, the Metropolitan’s AFR system has a 98 percent false positive rate — meaning that 98 percent of the “matches” it makes are of innocent people.

Of the two correct matches the Met’s technology has made to date, there have been zero arrests. One match was for an individual on an out-of-date watch list; the other for a person with mental health issues who frequently contacts public figures, but is not a criminal and not wanted for arrest.

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