A former football coach who slashed a takeaway shop worker with a pizza cutter and took him hostage in front of his own children in a vicious rampage is today starting a nine-year prison sentence.

Shocking CCTV footage of High Wycombe man Barry Sanderson's horrific attack was shown by a judge before he was jailed for intentionally wounding and causing grievous bodily harm to Mohammed Khan, and assaults on two of his colleagues, in Cressex earlier this year.

UPDATE: Warning to violent criminals after takeaway thug put behind bars

Moments after his partner made a food order, the 45-year-old thug stormed the premises, becoming more aggressive before starting his “brutal” attack – lasting about eight minutes.

The video shown at Aylesbury Crown Court, which heard Sanderson was suffering from Post Traumatic Stress Disorder, showed him viciously punching a member of staff in the face before moving into the kitchen wielding a pizza cutter.

Scared staff members desperately tried to stop Sanderson before they fled the shop as the attacker grabbed Mr Khan by the scruff of his neck, slashing him across the cheek with the blade.

Judge Francis Sheridan, said "Jesus", as the footage showed the victim fall to his knees out of “sheer fear” before Sanderson brutally kicks him in the back of the head after he was held hostage in a car park by the shop entrance.

Sanderson continued his attack after the victim stood up, punching him repeatedly.

After a staff member managed to lock him out of the shop, the former Edmunds Close resident left the scene, but was later arrested by armed police following a helicopter search.

Prosecutor Jonathan Stone told the court how the violent man has been jailed before for another attack, where he chased a burglary victim out of his home, hitting him “on the back of the head” with a golf club before asking "are you dead yet?".

At the time, Sanderson was jailed for five years after he and three other men broke into an acquaintance's house armed with golf clubs, metal bars and bats in 1999, the court heard.

David Miller, defending Sanderson, who appeared in the court via a video link from prison, argued Sanderson's attack should face a lesser sentence than attacks where victims were permanently disabled or shot.

Sanderson, who had admitted the charge and assault causing actual bodily harm against Tariq Mahmood and common assault against Mohammad Ashfaq, was sentenced for nine years, with four years on extended licence.

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The judge, who also jailed him concurrently for 35 months for the ABH charge and for four months for the common assault, said he would serve two-thirds of his prison sentence before being considered for parole.

Judge Sheridan said: "This defendant appears out of control, truly, truly harsh and violent and totally brutal in his horrid treatment of Mr Khan.

"Kicking him in the head, frightening and terrifying him with a chopper which is exhibited in the case - to say it was exceptionally sharp is an understatement.

"He punched wherever he could, to hurt anybody he could, wherever he could.”

He added: "The defendant's own children were present and other's related to him. Mr Khan was effectively a hostage.”

The victim still has not returned to work, four months after the attack, and continues to suffer from numbness in his chest, breathing difficulties and had to have a metal plate inserted in his skull following the attacks.

The victim told of how he was nervous about walking on the streets, adding: "Every time I look in the mirror I will see his [Sanderson's] face and the damage he inflicted on me."

The judge said: "That is about as serious psychological harm as it is possible to have in this case."

He added that Sanderson’s Post Traumatic Stress Disorder was caused by the death of one or more relatives and he is now receiving treatment.