A Bankside tower block caught fire, with firefighters treating residents for smoke inhalation.
Part of an eighth-floor flat on Blackfriars Road was damaged by the blaze on Wednesday, March 27.
Three people left the property before London Fire Brigade (LFB) arrived and were treated for smoke inhalation at the scene by paramedics.
LFB believes the fire, which took place between 8.34pm and 9.08pm, was accidental and caused by candles.
Six fire engines and around 40 firefighters from Lambeth, Dockhead, Soho, Whitechapel, Dowgate and surrounding fire stations were deployed.
A London Fire Brigade spokesperson said: “Candles are one of the most common causes of fire. It’s really important that you never leave a candle unattended and keep them away from anything else that can easily catch alight.
“Consider using battery-powered, flameless LED candles instead, which are safe even if you fall asleep. Whilst they may cost more upfront than traditional candles, they will last considerably longer, giving you better value for money.
“If you do choose to use traditional candles ensure you place them in a heat-resistant holder, on a stable surface where they won’t be knocked over and away from materials that could catch fire. Never leave them unattended around your home, take particular care with children and pets and blow them out properly before you go to 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.”