Essex police have set up a cordon around the incident
Fire bridges rushed to the scene in an attempt to stem the raging inferno on an industrial estate near Botany Way.
Ash is believed to be raining down on the nearby town as four fire engines attempt to tackle the blaze along with specialist equipment, including a foam lorry, Hose Layer and Water Bowser.
Essex police have set up a cordon around the incident, while train services which would have passed by the blaze have been put on hold.
It is unclear if anyone has been injured in the incident.
More to follow…