The family of a man who died in an Oxfordshire pub fight have started a fresh legal bid to find his killer.

BBC: Family of Kevin Lavelle in legal bid to find killer

Detained indefinitely under the Mental Health Act following a pub fight in 1989, Whiteman then strangled Derek Williams at Ashworth Hospital, Merseyside, with his dressing gown cord.

BBC: Phillip Whiteman

The 44-year-old, previously known as Phillip Westwater, was on a medium-secure ward at the Newcastle hospital after being detained indefinitely under the Mental Health Act following a pub fight in 1989.

BBC: Philip Whiteman hospital escape to be reviewed

Kevin Lavelle, 29, died following a fight outside the Cricketer's Pub in Banbury in June 2004.

BBC: Reward increased for Kevin Lavelle 'dumbbell' pub murder