Emergency services are on the scene of a road traffic accident on the Guilsfield Road next to the Brookland Hall entrance (updated 2pm).
A fire engine has blocked off the road but it is believed the incident involves one car with no serious injuries reported at the time of writing.
However diversions have created chaotic scenes on the back lanes as motorists from both directions seek a diverted route.
The road is expected to be cleared within the hour so the advice is to avoid until at least 3.30pm.