Plot: In a new documentary for BBC Three, journalist Livvy Haydock investigates the rise of vigilante groups who, without official endorsement from the police, target suspected paedophiles.
With access to two UK-based paedophile hunting groups, Guardians Of The North from Sunderland and Predator Exposure in Leeds, Livvy observes their methods and stings to discover first-hand whether these groups are helping or hindering the police in their attempts to administer justice
Livvy Haydock