11 September 2012 Last updated at 15:15 ET

Traffic warden karate-kicked in head in Leicester

The traffic warden fell to the ground after being kicked

CCTV footage has emerged of the moment a traffic warden was karate-kicked in the head.

The attacker was one of three pedestrians who approached the parking civil enforcement officer as he noted car registration plates in Leicester.

The kick was powerful enough to force the officer to the ground in Braunstone Gate.

It happened on 1 September, and CCTV installer Bob Young has now found footage which he has given to police.

Mr Young said: "The thing that shocks me is the guy was doing his job.

"They are not drivers, they are people that's just walking down the street and they've set about a person doing his public duty, and that is just not acceptable.

"I'm very pleased that we've actually got it on CCTV and hopefully the people will be brought to justice."

The attack happened outside a florist in Leicester

The attack happened at about midday, outside a florist in the street.

In the footage, the officer can be seen writing down car numbers in his book as the three men approach.

As they pass, one of them spits in his book, and the officer can be seen following the men and challenging them.

Another of the men grabbed the officer's pen during an exchange of words and shoved it in his face.

The same man then karate kicked the officer in the head, causing him to fall to the ground.

The footage then shows two of the men running away into a nearby Tesco car park.

Several people then stopped to help the officer.

"It's great to think that people actually react in such a way and want to help somebody, whether you've got a traffic warden's uniform on or not," said Mr Young.

Police are appealing for anyone with information about the attack to come forward.