Four fire engines and around 25 firefighters were called to a fire at a disused training centre on Silver Jubilee Way in Hounslow.
A small part of the ground floor of a four storey disused training centre was destroyed by fire.
The Brigade was called at 1804 and the incident was over by 1948. Fire crews from Feltham, Heathrow, Heston and Chiswick fire stations were in attendance.