Detectives in Hull go to great lengths to build up a digital trail of evidence that leads to two moped muggers who robbed an 85-year-old woman on her way home from church.Paul Pugh was beaten up in a completely unprovoked and vicious attack outside a pub in south Wales. Paul was hospitalised for more than a year and has been left with life-changing injuries. Since the attack, he has been campaigning to raise awareness of the link between alcohol and violence. Now, drink-fuelled offenders are being told to wear an electronic monitoring device known as a sobriety tag. The tag monitors their sweat and alerts the Probation Service if they consume even a small amount of alcohol. So far, the tag appears to be working, with offenders staying sober 97 per cent of the time.