Emergency 999 controllers helped three people trapped in a housing block in Ladbroke Grove in the early hours of Tuesday (September 13) morning.
The blaze started on the ground floor of a sheltered accommodation block in Sutton Way just before 2.30am, and left two people needing hospital treatment.
London Fire Brigade (LFB) was called when a smoke alarm alerted residents who called 999.
Ten people managed to escape before firefighters arrived at the scene, but three people trapped in their flats were given fire survival guidance over the phone by LFB’s control officers.
They told the residents to block their doors to stop smoke from coming in to their properties and to then open their windows.
Firefighters from Hammersmith and North Kensington stations wearing breathing apparatus then led them to safety.
A mobility scooter was gutted in the blaze and the corridor of the four-storey building was also damaged.
Watch manager Rob Edwards, who was at the scene, said: “It is important to stay on the line after making the initial emergency report because our control officers can give you advice on how to stay safe if you cannot escape a fire.
“Crews worked quickly to get the fire under control and their quick actions stopped the fire from spreading in to the flats.”
And he urged residents not to block hallways: “If you live in a block of flats, it is important to keep communal hallways and staircases free from clutter, including mobility scooters and wheelchairs.
“Storing items in communal areas can block residents’ escape routes if they need to get out and hamper our firefighters who are trying to tackle the fire or reach people if they need rescuing.”
The cause of the fire is under investigation.
A 999 operator also recently helped a woman in Chelsea who was trapped in her home by flames.