A leading barrister has told talkRADIO that police must retain control of investigations into paedophile activity - or else we could end up with vigilantes running the legal system.
Jeremy Dein QC spoke to Sam Delaney after reports that police admitted to the BBC that they may have to work with self-styled paedophile hunters, after new figures showed a sharp rise in cases using vigilante evidence.
Figures showed that the number of sexual grooming cases in England, Wales and Northern Ireland which cited such evidence rose from 11% in 2014 to 44% two years later.
But Dein said this is a worrying trend which has to be monitored, as if professional law enforcement agencies allow vigilantes to take control of these investigations, we run the risk of letting people who aren't familiar with the law do our policing for us.
Sam also spoke to Chris Hobbs, a former Met Police officer, about why evidence obtained by vigilantes can be dangerous.