A British court sentenced teen Axel Rudakubana to a record 52 years in prison, minus time served, for murdering three young girls in a frenzied stabbing attack at a Taylor Swift-themed dance class in Southport in July.

As Southport killer Axel Rudakubana begins his life sentence behind bars, urgent questions have been asked about why the murderous teen wasn't stopped long before he ended the lives of three innocent

The judge says the killings caused "shock and revulsion" to the whole nation and that Rudakubana would have killed all 26 children if he'd been able to.