Six fire engines and around 40 firefighters were called to reports of sheds alight on Windsor Road in Harrow.
A garden shed and the decking at the rear of the property was destroyed by fire and around 10 metres of garden fencing was also damaged by the blaze. Three further garden sheds in the rear gardens of adjacent properties were also destroyed. Firefighters cooled and removed two gas cylinder to an ambient temperature as some cylinders can explode when exposed to heat. One man was treated on scene by London Ambulance Service crews and taken to hospital.
The Brigade’s 999 Control Officers took 34 calls to the blaze.
The Brigade was called at 1742 and the fire was under control by 1905. Fire crews from Stanmore, Harrow, Wembley and Northolt fire stations attended the scene.
The cause of the fire is under investigation.