DASH cam footage showing a driver reversing up an A34 slip road in the middle of a thunderstorm has been shared online. 

Youtube user 'Matty Merry' published this video with the title 'I couldn't believe what I saw on the A34 southbound.'

The video, captured on Saturday night, shows the car in front reversing and forcing oncoming traffic to swerve out of the way. 

Lightening illuminates the sky during the one minute clip, taken when Oxfordshire was in the midst of a massive thunderstorm.

Mr Merry added that he thought the driver in question was 'an idiot'.