'Legal highs' linked to deaths of 79 inmates in UK, says prisons ombudsman

Drugs previously known as "legal highs" have been linked to the deaths of at least 79 UK prisoners, a watchdog has revealed.

New psychoactive substances (NPS), which mimic the effects of drugs such as cannabis, have been identified as a major factor behind the surge in violence and self-harm across jails in England and Wales.