We were called at 11.43am on 5 April to reports of a shed fire in Stanstead Crescent, Brighton.
Crews from Preston Circus, Hove and Roedean are in attendance.
Firefighters are currently using six Breathing Apparatus, three hosereel jets and one main jet to tackle the fire.
Please avoid the area.
A further update will be provided at 1.30pm.
UPDATE 1.30pm:
At the height of the incident 6 fire engines were in attendance with crews from Preston Circus, Hove, Pevensey and Lewes.
As of 1.20pm four fire engines, the command support unit and officers are in attendance.
As of 1.34pm the incident is being scaled down to two fire engines and crews are damping down to ensure the fire is out.
Police are in attendance for traffic management. Please continue to avoid the area.