A HUGE plume of smoke following an explosion dominates the south Essex skyline this evening.

It believed, at this early stage, that the seat of the blaze is a farm near Hanningfield where ammonia is stored.

The smoke can be seen from many miles away.

Many residents in the east of county, including Southend and Benfleet report having heard a 'window-rattling' explosion.

An Essex Fire and Rescue Service statement says: "We're currently at the scene of large industrial unit fire in Southend Road between East Hanningfield and Rettendon.

"If you live or are travelling nearby, please keep your windows and doors closed.

"Please avoid the area if you can."

At 6.30pm, the fire service said 100 firefighters from stations across the county were tackling the flames.

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More information to follow.