Crew members from the capital’s fire service are tackling a fire at a factory where 400 tonnes of waste recycling is said to have caught alight.
Firefighters were called about the blaze at 11.41pm yesterday and crews from Hillingdon, Heathrow, Feltham, Hayes, Heston and surrounding fire stations are at the scene.
Around 10 gas cylinders have been removed as a precaution.
London Fire Brigade has warned some cylinders can explode when exposed to heat.
However, the cause of the fire is not yet known.