Police say large groups of children who are gathering on bikes in Northampton Town Centre and ignoring road safety are putting themselves in danger.
CCTV has been released showing a group of around 40 children. They are gathering around the drapery, Gold Street and Abington Street, riding on the wrong side of the road, on pavements and doing stunts on their bikes.
Officers want to identify the children involved so they can give them safety advice.
Police say vehicles have also been damaged by the riders, including taxis which have had wing mirrors kicked off, while buses have had emergency engine cut-out buttons pushed.
The meetings are often organised through social media with those involved aged between 10 and 15 years old.
The released CCTV image was taken on 2nd of January.