A drunk was jailed for five years for the manslaughter of a Bicester man who was visiting his newborn step-grandson in hospital.

Richard Griffiths was trying to steal a plate of sausage and chips when he lashed out at security guard Bob Robinson.

Mr Robinson, 61, from Bicester, was visiting his stepdaughter in the maternity wing of Milton Keynes Hospital when he stepped in to stop Griffiths attacking a chef.

Mr Robinson, who had remarried two weeks before the incident, died when he and Griffiths fell to the restaurant floor during the scuffle, on May 5 last year.

Mr Robinson banged his head on the tiled floor, suffered skull fractures and had a heart attack.

Jurors took just over an hour to convict Griffiths, 49, from Milton Keynes, of manslaughter at St Albans Crown Court.

Sentencing him, Mr Justice Bell said: "The fact is that your unlawful struggling against a man only trying to stop violent behaviour cost him his life."

Griffiths, who denied manslaughter, had been drinking cider all day. He told police that he went to the hospital to find food, but had no intention of paying for the meal.

Griffiths was also given three months' jail, to run concurrently, for assaulting chef Mustafa Afassi-Alami.

Sentences of three months each were also imposed for the theft of two cans of lager and the assault of a shop worker. Those sentences will run consecutively.