Richard Huckle, Britain's most prolific paedophile has been found stabbed to death in his prison cell in Full Sutton prison.

Sky's Martin Brunt looked at the life of Britain's most notorious child sex offenders in his report Portrait of a Paedophile. Police believe Huckle abused up to 200 children aged between six months and 12 years.

A warning - this report contains details and material which some viewers may find disturbing.

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