Police are warning motorists to be vigilant tonight after an airgun was fired at three cars in the space of an hour on the M20 in Kent.

One driver's face was cut by shattered windscreen glass. Tonight, motorway CCTV footage is being examined by police, who say there is a serious risk of 'horrific consequences' unless the culprit is caught fast.

Cars were targeted while travelling on the London-bound section of the M20 near junction 3 with the M26 at Wrotham Heath. John Ryall reports.