The security camera footage is black- and-white and a little grainy but it reveals unequivocally a premeditated violent attack by a drunken thug on an innocent bartender.
The man wielding the vodka bottle is speedboat killer Jack Shepherd.
He is currently in prison for the manslaughter of Charlotte Brown who drowned when she was flung from his speedboat after a champagne-fuelled joyride down the river Thames.
Shepherd's victim is Army veteran David Beech who, at the time, was still recovering after being shot in the head by a Taliban sniper while on operations in Helmand.
Just hours after the bottle attack, Shepherd, 31, would flee Britain for eastern Europe where he lived as a fugitive until his discovery in January.
'The lucky one': David Beech was recovering after being shot at by a Taliban sniper when he was struck by Shepherd
Wounded: The ex-Royal Tank Regiment soldier was hurt in the attack and it derailed his recovery
Earlier this month, he pleaded guilty to wounding with intent to cause grievous bodily harm to Mr Beech. Shepherd was jailed for four years in addition to the six he is already serving for the manslaughter of 24-year-old Charlotte.
His conviction leaves Mr Beech, a former frontline Challenger Tank driver, able to deliver a damning verdict of his own.
'Jack Shepherd is a spineless liar, a snivelling little coward, and a sociopath who tries to manipulate everybody and every situation to his own advantage,' he says.
'I've got far more respect for the Taliban sniper who shot me than I have for him. He's a complete weasel. The apologies, the remorse shown in court, it's all a sham.'
In the aftermath of Charlotte's death in November 2015, Shepherd's attack on Mr Beech was all but ignored. The story of the pretty brunette killed when a Tinder date ended in tragedy dominated the headlines.
Charlotte had willingly boarded Shepherd's red 14ft speedboat at its Hammersmith moorings for a late-night trip to the House of Commons. But, apparently, they struck a submerged log near Wandsworth Bridge. Shepherd saved himself, publicly showing so little contrition to her grieving family that he became nationally reviled.
Now, the full details of what Shepherd did to the ex-Royal Tank Regiment soldier while he was awaiting trial for Charlotte's manslaughter, can also be revealed.
Denial: Shepherd originally denied he was responsible for the attack but CCTV footage proved otherwise
What emerges from the account is that Shepherd's self-pity, his lying about who was to blame and his callous disregard for someone who could have been killed by his actions, are identical to the despicable way he behaved after Charlotte's death.
Today David Beech, 32, tells for the first time how the attack in a Devon hotel derailed his recovery by triggering a series of terrifying flashbacks to the moment he was shot in the head.
Already suffering from brain damage and Post-Traumatic Stress Disorder (PTSD), he ended up too scared to leave his home. Physically, the impact of the bottle on his skull has left him with a jagged scar on his forehead, just two inches from the wound inflicted by the Taliban.
'For the ten months Shepherd was on the run, I was very scared because I knew, probably better than anyone else alive, of his disregard for human life,' Beech says.
'What terrified me the most was that he had friends and family living near me. As a soldier, I know he'd consider these safe havens, somewhere he could return to lie low and possibly to strike again. His attack on me was enough to have killed me or blinded me yet it came without any warning. There were no threats, no escalation before it happened, none of the things I had been trained to look for and guard against.
'So how could I be certain he wouldn't sneak back to Devon and come after me again?
Lashing out: Shepherd was jailed for four years because of the attack on the veteran
'It left me so on edge that if I heard any noise at night, I'd be up and watching through my bedroom window for anything suspicious. It was like I was back in Afghanistan. I knew how violent Shepherd could be because all I'd done that night in the hotel was to – very politely – ask him to leave the premises. He was too drunk to be served.
'Seconds later and with my back turned to him, he produced the vodka bottle and clubbed me around the head. He wasn't even angry, he just seemed to act on instinct. That's what makes him a very dangerous individual.'
Mr Beech, from Moretonhampstead, Devon, had never met Shepherd before the early evening of March 16 last year when he swaggered drunkenly into the village's plush White Hart Hotel.
Bar work was just another minimum wage job David had after leaving the Army with a pitiful £10,000 one-off payment in 2015. This, said the Ministry of Defence, was adequate compensation for the life-changing wounds he'd sustained serving his country in 2013.
Chronic memory loss, epileptic seizures and migraines, along with the heavy medication which left him exhausted and unable to work for long periods, saw David seek work in his home village where he would be among friends.
The team at the White Hart was happy to support his recovery and David's confidence was growing.
He was on duty in the bar when at about 6pm Shepherd and a male companion entered the hotel, already deeply drunk. David ushered them politely back towards the front door and they left to find somewhere else to eat and drink.
But they returned around 9pm, even more drunk and eager to continue. Unknown to David, Shepherd had brought a bottle of vodka with him which he had concealed down the back of
