Three young tearaways filmed themselves roaring around a children's park on a motocross bike, then posted the footage on the Internet.

Last night, angry people in Greater Leys said the film, posted on the YouTube website, showed the youngsters' blatant contempt for the police and safety of children in the park.

As police launched an investigation into the video, residents demanded action against groups of antisocial bikers who, they say, have blighted their estate for years.

David Troth, 45, whose dog was blinded by a motorcycling lout two years ago, said: "It is disgusting. It shows the contempt they have got for the police if they are willing to show their faces on the video."

More than 100 people have watched the 2min 35sec video, which was uploaded on YouTube two weeks ago by youths dubbing themselves "Greaterleys Goons".

The footage shows three children piling on to one bike and reaching estimated speeds of 30mph in Gillians Park.

Two of the bikers, including the one who is filming their antics, do not wear safety helmets.

The group also veer dangerously close to friends on pedal cycles and people walking in the park before tearing across residential roads and crossing to a lane off Grenoble Road.

They end the video yards from the spot where Mr Troth's Staffordshire bull terrier Jazz and Pcso Simone O'Dell were injured in collisions with bikers.

Mr Troth, of Deer Walk, Greater Leys, said: "If the police cannot sort something like that out in three-and-a-half years, they might as well pack their bags and go back to the police station."

Mr Troth's neighbour Tracy Smith added: "They are making a mockery of the police."

City councillor Stuart Craft added: "We want something done about this before a child is killed."

Police and Pcsos have issued 16 Section 59 notices to antisocial riders on the Leys estate which remain active. The notices mean bikers caught riding a vehicle antisocially again will have their bike confiscated.

Area Sgt Mark Davis said the estate's residents had chosen problems with motorbikes as the police's ninth highest priority in the area.

He added: "We thank the Oxford Mail for highlighting the footage on YouTube, which will be used as part of our investigation."

Do you know the three lads? Call our news team on 01865 425423

Go to this link to watch the video http://www.oxfordmail.net/media/goons/