A Tory MP whose father was killed by a one-punch attack today launched a new cross-party effort to right 'burning injustices' felt by victims. Dehenna Davison, the Bishop Auckland MP, spoke out on the issue on the 14th anniversary of the death of her father Dominic, who was just 35 when he was killed in a Sheffield pub. The 27-year-old today announced the launch of the All Party Parliamentary Group for One-Punch Assaults which will examine sentencing and the impact on surviving victims and the families of those killed. In a video announcing the launch she said: 'To me this is very personal and feels like something I have wanted and needed to do for a really long time.