The incident in Little Waltham, near Chelmsford, has smoke visible in the area with Essex Fire and Rescue Service receiving dozens of calls. Firefighters remain at the scene and people are urged to avoid the area. A spokesman for the fire service said: "We've received dozens of calls reporting the fire - thank you to everyone who has called. "It has been reported that smoke can be seen from Witham and Braintree areas. "Please avoid the area."