Four fire engines and around 25 firefighters were called to a fire in woodland at the rear of a freight depot.
An area measuring just over the size of a basketball court was destroyed by fire.
During the fire, two 15 kg cylinders at the site were safely removed by firefighters and cooled to an ambient temperature, as gas cylinders can explode when exposed to heat.
The Brigade's 999 Control officers received a call about the fire at 2326 and mobilised crews from Feltham and Heston fire stations. The fire was under control by 0039.
The cause of the fire was accidental and believed to be due to the careless disposal of smoking materials.