Crash causing delays on A47 near Norfolk Showground
There are lengthy delays westbound between the Thickthorn and Longwater junctions. One eyewitness has described seeing a heavy emergency service presence and that police are blocking the road. 
National Highways has confirmed that part of the road is closed. A spokesman said: "The A47 is closed westbound between B1108 at Little Melton and A1074 near Norwich due to a collision involving a lorry. "Norfolk Police are on the scene."
Road users are advised to follow the hollow triangle diversion symbol on road signs.
A diversion is currently in place for drivers:
- Exit the A47 at Thickthorn Interchange and take forth exit from the roundabout onto the A11 eastbound.
- Continue on the A11 towards Norwich.
- At the roundabout with Mile End Road, take the 1st exit on to the A140.
- At the roundabout with the A140/A1074, take the 1st exit on to the A1074.
- Rejoin the A47 westbound at Longwater Interchange.