The incident happened on the slip road at junction 8 as it approaches the westbound carriageway, at around 8.20am on Wednesday 12 July 2023.
Police and ambulance crews attended the scene where the van had left prior to their arrival. The motorcyclist was taken to hospital for treatment to leg and arm injuries. He has since been discharged.
‘We have been investigating the incident and are now urging witnesses and anyone with relevant dashcam footage to contact us.’
Anyone with information should call the appeals line on 01622 604100, quoting reference 46/124017/23. You can also call Crimestoppers anonymously on 0800 555111 or complete their online form.