Around 20 firefighters wearing breathing apparatus tackled a blaze in the basement of a pub in College Approach, Greenwich, last night
Thirty people left the building before the Brigade arrived and one man was taken to hospital by the London Ambulance Service suffering from smoke inhalation.
Part of the basement was damaged by fire.
The Brigade was called at 2046 and the fire was brought under control at 2146. Four fire engines from Greenwich, East Greenwich, Lewisham and Forest Hill fire stations attended the incident.
The fire is believed to have been caused by the careless disposal of smoking materials.