Dozens of drivers who were filmed doing U-turns on a motorway have escaped prosecution, it has been revealed.

The dangerous manoeuvres on the M1 in Northamptonshire were caught on CCTV, but police say they have not been able to trace most of the vehicles, reports the Press Association.

Dave Nichols, professional engagement officer at Brake, says that means despite being caught on camera, the drivers involved have got away with breaking the law.

A number of vehicles, including a coach, were filmed driving the wrong way along a slip road so they could get off the motorway and avoid a traffic queue caused by an accident near Crick in July.

At the time, PC Dave Lee, of Northamptonshire Police, said the motorists had been behaving "ridiculously".

Following the incident a coach driver was spoken to by officers and is said to have resigned from his job.