'Our son was blackmailed online for sex images'

A surge in the use of video chats and live-streaming among children is leaving them vulnerable to abuse, the NSPCC has warned, calling for a social network regulator to be introduced.

One child, "Ben", tried to take his own life after being blackmailed for sexual images shared between six men.

Watch the BBC's Victoria Derbyshire programme on weekdays between 09:00 and 11:00 BST on BBC Two and the BBC News channel in the UK and on iPlayer afterwards.