Six fire engines and 35 firefighters and officers attended a fire at an office block under refurbishment on Uxbridge Road in Ealing this morning.
Half of the fifth floor of the office block was damaged by fire. No injuries are reported.
The Brigade was called at 0804 and the fire was under control by 0952. Fire crews from Ealing, Acton, Chiswick, Park Royal and Wembley fire stations attended the incident.
The cause of the fire is under investigation.