Child Killer

Aaron Campbell became one of Scotland's most infamous child killers after abducting and murdering seven-year-old Megan Montgomery in Airdrie, North Lanarkshire, in 2020. Campbell lured the child from outside her home before killing her and concealing her body in nearby woodland. Following an extensive police investigation, he was convicted of murder and sentenced to life imprisonment with one of the longest minimum terms imposed in Scotland for the murder of a child.

Angharad Williamson became one of the United Kingdom's most reviled child killers after murdering her two young sons, John Paul Bennett and Jake Bennett, alongside her partner, Jamie Barrow, in South Wales in 2020. The boys endured prolonged abuse before being killed inside their family home. Following a high-profile trial, Williamson and Barrow were convicted of murder and sentenced to life imprisonment, with the case prompting renewed calls for stronger child protection measures.

Craig Mulligan became one of the United Kingdom’s most shocking juvenile killers after being convicted for his role in the murder of a five-year-old child in South Wales in 2021. The case horrified Britain because Mulligan was only 13 years old at the time of the killing, making him one of the youngest convicted murderers in modern Welsh criminal history. The investigation generated enormous public outrage after details emerged about abuse inside the household, repeated safeguarding failures and warnings allegedly ignored by authorities before the murder occurred. The case later became one of Britain’s most disturbing examples of child-on-child violence combined with systemic failures involving social services and child protection agencies.

John Cole became one of the United Kingdom's most reviled child killers after murdering five-year-old Logan Mwangi alongside his stepfather, Angharad Williamson, in Bridgend, South Wales, in 2021. Logan suffered prolonged abuse before being fatally assaulted and his body was abandoned in a nearby river. Following a high-profile trial, Cole was convicted of murder despite being only 14 years old at the time of the offence, making him one of the youngest people convicted of murder in modern Welsh criminal history.