Drivers are dealing with long delays and road closures following a collision, which has led to a "substantial" fuel spillage.

The M40 in Buckinghamshire is closed southbound between J6 (Lewknor/Watlington) and J5 (Stokenchurch).

Traffic officers from National Highways are in attendance alongside Buckinghamshire Fire and Rescue Service.

The transport authority reported a "substantial fuel spillage", noting that service providers are at the scene.

Traffic is building up along the major motorway following the road accident

According to transport provider Oxford Tube, there is an "overturned vehicle" on the M40, meaning all of its buses are being diverted via the A34 and the M4.

As a result, Oxford Tube's stop in Lewknor is out of service as the buses head between Oxford and London.

Traffic maps from National Highways suggest that the event is expected to clear by midday, with normal road conditions returning at a similar time.

National Highways is also reporting that the accident, which involves an overturned vehicle", is currently active.

Traffic maps show standstill conditions between J6 and J5 on the M40