A woman was taken to hospital by land by London Ambulance Service crews.
A London Fire Brigade spokesperson said: “Fan heaters should always be used in an uncluttered space where heat and air flow is unrestricted.
“It’s also absolutely vital that heaters are kept well away from curtains, furniture, paperwork and are never used to dry clothes.
“Always sit at least a metre away from the heater, particularly those using them whilst working from home, as it could set fire to your clothes or your chair and position them where they won’t be knocked over and away from pets.”
*Picture credit Graham Mitchell