A traffic warden was beaten so severely he was off work for six weeks with his injuries after he issued a ticket to a van in London last year.
He still suffers from blurred vision from a head injury.
Shocking video of the attack shows how three burly, shirtless men assaulted the traffic warden, kicking and punching him, and striking him with his own radio.
The 45-year-old father-of-three, who asked not to be named for his own safety, managed to press a panic button on the device to call police.
The warden, who was knocked to the ground by the burly men, managed to call for help from the police and London Ambulance Service after pressing a panic button on his machine.
Builders Kevin Lee Ritchie, 36, Shaun Ritchie, 28, and 27-year-old Loon Cuong Chu were all found guilty of assault after Highbury magistrates in North London viewed the footage.
Kevin Lee Ritchie, the van driver, was given a three-month jail sentence, suspended for six months, and ordered to do 200 hours’ community work.
The other two were each ordered to do 180 hours of community labour. All three must also pay the unnamed warden £1,320 in compensation, costs and victim surcharges.
The court heard the warden – who does not want to be identified – was attacked moments after issuing a ticket to a van in Agincourt Road, Hampstead.
The enforcement officer, who has worked as a traffic warden for three years, had to be treated at the Royal Free Hospital in Hampstead afterwards for facial bruising and a head injury.
He told a local newspaper: “I had issued a ticket to the van when one of the men started arguing and hit me on my chest.
“Then the other two arrived and joined in. They were kicking and punching me and one of them hit me on the head with my radio.”
Police and paramedics arrived shortly after the attack.
Paolo Orezzi, a spokesman for parking enforcement company NSL, which employs 170 of the wardens covering Camden, welcomed the sentences.
He said: “I hope this sends a strong message to motorists that this type of behaviour will not be tolerated.
“Our employees are just trying to do their job. I’m glad justice has been served.”
It is understood the incident was one of five serious physical assaults involving parking wardens in Camden last year.
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