It is one of the grimmest of crimes – its victims among the most vulnerable, but often seen as criminals themselves. (Subscribe: https://bit.ly/C4_News_Subscribe)
Exclusive figures seen by this programme, give a sense of the scale of the devastation caused by criminal exploitation: 47 children killed or seriously harmed in two years.
We have been speaking to the mother of one 14-year-old boy shot dead three years ago, who says it must be made a priority.
Follow us on Instagram – https://www.instagram.com/Channel4News