Four fire engines and around 25 firefighters attended a fire at a hostel on Great Peter Street in Westminster.
A room on the fourth-floor of the property was destroyed by fire. Around 70 people left the building before firefighters arrived and there were no reports of any injuries.
The Brigade was called at 1922 and Control Officers mobilised crews from Dowgate, Chelsea and Lambeth fire stations to the scene. The fire was extinguished by 2003.
The cause of the fire is under investigation.