The NHS referred 420 patients and staff to police in England and Wales in a year over concerns they were at risk of radicalisation, the BBC has learned.

National Police Chiefs' Council (NPCC) figures show an average of 35 referrals a month in the year to July 2016 - up from 21 a month the previous year.

Since July 2015, public bodies have a legal duty to report people considered at risk of being drawn into terrorism.

The government says its Prevent programme safeguards people at risk.

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