A number of roads have been closed following the multi-vehicle pile-up along the A41 this morning.
Police, paramedics, fire crews and an air ambulance were called at about 9.15am to the A41 southbound, close to Junction 20 (M25), following reports of a crash.
Five vehicles are believed to have been involved in the accident.
According to police, the A41 slip road has been closed, as has Two Waters (A41 Trunk Road), and Junction 20, causing a heavy backlog of traffic.
The Highways Agency is currently assisting police.
More details to follow.
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