A 48-year-old man stabbed a disabled drinking friend to death, repeatedly hitting him with a foot-long kitchen knife, a court heard.

David Goodman, of Mold Crescent, Banbury, pleaded not guilty to murdering Richard Clarke, 45, of Arundel Place, Banbury, at Oxford Crown Court on Thursday.

Peter Birts QC, prosecuting, said Goodman stabbed Mr Clarke in his kitchen late on March 4, after a drinking session. One blow penetrated his heart and liver and he died almost immediately from loss of blood.

The jury heard Goodman removed the knife from his victim's chest, ran out and knocked at the door of his neighbour, his aunt Dorothy Goodman. Mr Birts said Goodman shouted: "Dial 999, I've stabbed the bastard," according to his aunt.

Police arrived seven minutes later and arrested Goodman and another occupant, Noreen Page, who had also been drinking there.

The jury were shown a video, made by the police, showing Mr Clarke lying on his back in the kitchen doorway covered in blood with his crutch in his hand.

The knife was later found in Goodman's kitchen drawer covered with blood belonging to Mr Clarke. Pathologists found the dimensions of the knife matched the wounds suffered by the deceased.

They also found wounds on Mr Clarke's hands, which Mr Birts said were caused by the victim raising his hands to defend himself.

Mr Birts said witnesses had heard Goodman and Mr Clarke talking in raised voices earlier that evening. Goodman's aunt had called the police about the noise earlier that day, but halfway through the call changed her mind.

The court heard Mr Clarke, a stonemason, with two children, had suffered a stroke which left him severely weakened on his left side. He needed a crutch to walk.

Both Goodman and Mr Clarke were heavy drinkers who met through their common drinking habits.

The case continues.