Four fire engines and around 25 firefighters attended a fire at a block of flats on Grinstead Road in Deptford.
Part of a second-floor flat was damaged by fire. A woman was rescued from a second-floor window by firefighters via a nine metre ladder. A man evacuated the flat before firefighters arrived. They were both taken to hospital by London Ambulance Service to be treated for smoke inhalation.
The Brigade's Control Officers gave vital Fire Survival Guidance (FSG) on how to stay safe before firefighters arrived.
The fire is believed to have been caused by the unsafe use of incense sticks.
A London Fire Brigade spokesperson said: "Incense sticks, candles and oil burners are one of the most common causes of fire within homes. It’s really important that you never leave these items unattended.
"Make sure you place incense sticks in a suitable, fire-resistant holder and keep them away from curtains and anything else that can easily catch fire. Remember to put them out entirely when you leave the room and especially before bed.
"We also recommend taking some time to carry out a few simple checks to keep yourself and your loved ones safe. The Brigade’s online Home Fire Safety Checker can guide you around your home and provide you with specific advice to reduce fire risks.”
The Brigade was called at 0719 and Control Officers mobilised crews from Deptford, New Cross, Greenwich and Old Kent Road fire stations to the scene. The fire was extinguished by 0808.