Police are appealing for witnesses after a man was dragged 200 yards along a main road by a driver after they had an argument.

Traffic officers have released images of a car whose driver they are trying to trace following the incident in Hanger Lane on November 14 at about 9.15pm.

A 59-year-old taxi driver was driving his black Ford Galaxy people carrier (registration number LR12 OSG) eastbound along the A40 towards central London.

A short distance before the Hanger Lane underpass, the taxi hit the central reservation and got a flat tyre. The driver stopped in lane two and put his hazard lights on.

Soon afterwards, a car described as a silver/grey coloured Suzuki Ignis (registration number believed to start CA04) collided with the back of the taxi.

An argument between the two drivers ensued. The driver of the Suzuki then decided to leave the scene. The taxi driver attempted to stop him but the Suzuki driver held on to the taxi driver and accelerated away into the Hanger Lane underpass.

The taxi driver was dragged about 200 metres before he fell onto the carriageway, a short distance from the exit of the tunnel.

The taxi driver, who is from Luton, was taken to hospital suffering serious injuries. Fortunately they were not life-threatening and he was later discharged from hospital.

Detective Sergeant Cheryl Frost who is leading the investigation for the Road Death Investigation Unit from the North West Traffic Garage said: “We would like to speak to the driver of this vehicle or anyone, who may have knowledge of the vehicle involved in this collision. We believe that this vehicle will have damage to its front offside headlamp.

“We are also appealing to witnesses to the initial collision or the events after it, who have not yet spoken to police, to contact us”

Anyone with any information that could help police should call the dedicated witness line on 020 8842 1817 or call Crimestoppers anonymously on 0800 555 111.