A man who ruined his teenage friend's life by cutting his throat with a broken bottle has been sentenced to nine years in custody.

Christopher Gill mistook James Sharp, who was just 17 at the time, for a man who had annoyed him in a trivial row over a cigarette in a Bradford bar.

Leeds Crown Court heard that Gill, 20, of Greenside, Oakenshaw, seized Mr Sharp from behind in the city centre.

He forced his head back and drew a jagged bottle across his throat.

Mr Sharp was rushed to Bradford Royal Infirmary with a horrific injury.

The horrific attack with the bottle was captured on CCTV.

Gill was convicted of attempted murder by a jury at Bradford Crown Court. He had pleaded guilty to burglary and theft at his grandparents' home just after the bottle attack.

The case had been adjourned for probation and medical reports.

Judge James Stewart, QC, yesterday said the murder attempt on September 7 last year arose from a trifling dispute in a Bradford bar.

A man called Paul Garratt had argued with Gill over a cigarette and Mr Garratt had pushed Gill.

Gill went to a car park, picked up a bottle, broke it and returned to the scene.

He saw a person he thought was Mr Garratt standing in the road with his back to him.

The judge said that after the attack Gill walked off, oblivious to the fact that it was his friend he had tried to kill.

The judge told Gill that Mr Sharp, who was a landscape gardener, was now physically and emotionally disfigured. He was scarred and had no sensation in his chin, had become a recluse and seldom went out.

"You have ruined your friend's life all because of an argument over a cigarette," he said.

Judge Stewart sentenced Gill to nine years in a young offenders institution.

Jonathan Gibson, prosecuting, had told the court that after the attack Gill broke into the home of the grandparents who had brought him up after the attack. He stole a mobile phone, other items and a cash card that he used to withdraw £400 from a cashpoint.

Neil Clark, mitigating, that Gill was emotionally unstable at the time.

The grandparents who had brought him up since he was 11 had asked him to leave their home and he had split with his girlfriend.