A father was brutally felled with a lump hammer after challenging youths who demanded cigarettes from his children.

Craig Griffin was dealt "a fearsome blow to the head" and then kicked as he lay in the street, Bradford Crown Court heard.

Mr Griffin, 36, married with two children, had been celebrating New Year with family and friends in Low Moor, Bradford.

He was seized by the arm so he could not defend himself from the single hammer blow in the early hours on January 1 last year.

His attacker, demolition worker James Trotter, was today locked up for three years and four months.

Trotter, 19, of Milner Ing, Wyke, Bradford, pleaded guilty to causing Mr Griffin grievous bodily harm with intent.

Prosecutor John Bull told the court Mr Griffin was struck with the hammer after a confrontation outside Trotter's home.

Mr Griffin fell to the ground and was briefly knocked unconscious.

He was bleeding from both nostrils and he had a fractured face, swollen nose, cuts and swelling.

He spent two days in hospital and needed seven stitches to his face.

Mr Bull said Mr Griffin was walking home with family members, including five children, after celebrating New Year.

Three of the youngsters, one aged just nine, were ahead of the party when they were stopped on Summerhall Ings by two youths demanding cigarettes, the court heard.

Mr Griffin intervened and was threatened, Mr Bull said.

He became angry and while his wife, the children and other family members continued towards home, he followed the youths to speak to their parents about their conduct.

Mr Griffin became involved in a confrontation with others on Milner Ing.

A webcam from a house in the street captured footage of Mr Griffin walking away after a noisy disturbance.

Trotter, who was not involved in the initial trouble, can be seen striking one blow with the hammer and returning to kick Mr Griffin once in the head as he lies prone in the street.

Mr Bull said Mr Griffin now suffered headaches, flashbacks and short-term memory loss.

His victim impact statement spoke of him being unable to leave his home and feeling stress and loss of confidence.

Mr Bull said ten people were arrested but only Trotter was charged, although unlawful violence was clearly used by others.

Jayne Beckett, Trotter's barrister, said Mr Griffin was aggressive and confrontational at the start of the incident.

Trotter was one of many people involved and his family felt a sense of grievance that he was the only one in the dock.

He was only 18 at the time and suffers from Attention Deficit Disorder that meant he lost his temper more easily than others may have done.

Mrs Beckett said the weapon was a rubber lump hammer picked up in the heat of the moment.

Trotter was a hard-working man with a partner and young child and no convictions for violence.

Judge Geoffrey Marson QC said Mr Griffin had been drinking when family members were confronted by two abusive males.

Trotter took the law into his own hands and delivered "a fearsome blow" to Mr Griffin's head while his arm was held by another person.