‘Happy slap killer’ accused of assaulting girlfriend

A convicted ‘happy slap’ killer who filmed a fatal attack on her phone assaulted her girlfriend for sharing a photograph of her without her permission. Chelsea O’Mahoney, 30, was 14 when she recorded her friends kicking a gay barman to death during an all-night rampage of violence around London’s South Bank in 2004. She told 27-year-old David Morley: ‘Pose for the camera’ as he was savagely battered by the gang before booting him in the head as he lay dying….