The closure affects London Road in Benfleet, just before the Tarpots junction, with police, fire, and ambulance crews at the scene. Blocked - a large emergency response has been seen (Image: Peter Spriggs / Newsquest)Police and the fire service have taped off the road, and slow traffic has built up in the area on Sadlers Farm roundabout, the A13 and the A130. Drivers are advised to avoid the area. Police and paramedics are also at the scene (Image: Peter Spriggs / Newsquest)The nature of the incident has not yet been confirmed. Essex Police and Essex Fire and Rescue Service have been contacted for comment.