Concerns have been raised over children's privacy after it was revealed schools across the country - including eight in this region - are using CCTV cameras in toilets and changing rooms.
The figures released by the campaign group Big Brother Watch also show three schools in the East have more than one camera for every 15 students.
This includes The Hewett School in Norwich who told Anglia News that the CCTV helps prevent vandalism, bullying and truanting.
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Armed officers will be on patrol at major infrastructure sites across Essex and the county will see more police patrols.