A man and a child left the building before the Brigade arrived and were taken to hospital by London Ambulance Service crews.

The Brigade’s Fire Investigators believe the fire was accidental and caused by the failure of a lithium-ion battery in the kitchen.

A London Fire Brigade spokesperson said: “Batteries can present a fire risk if they’re over-charged, short circuited, submerged in water or damaged, so it’s really important to protect them against being damaged and charge them safely.

"Unplug devices once they have finished charging and make sure you use the right charger for your device.

“This is also a timely reminder to test your smoke alarms. There were no working smoke alarms fitted inside the property. 

“Having working smoke alarms is so important in helping to detect fires and save lives. They can provide time to escape.”