Earlier this year, officers deployed Live Facial Recognition (LFR) cameras over two days, using the high-tech equipment to identify wanted suspects and those who had failed to attend court.

In just eight and a half hours of operation in March, the system scanned 101,511 passers-by.

A LFR van in the city centre (Image: Peter Walsh, Newsquest)

Despite the scale of the surveillance, the technology generated only two positive alerts, both leading to police interventions, according to Norfolk Constabulary data.

During one weekend, a man was identified as being wanted for failing to appear in court. When he was stopped by police he was also found to be in possession of cannabis.

The man was rebailed for his court warrant and issued with a community resolution for possession of the drugs.

A second man was........

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