Firefighters are warning residents to take care with bonfires after a blaze at a storage yard on Manor Road in Erith.
Most of two 20-foot ISO containers and half of two vehicles were damaged by the fire. A further vehicle and around four tonnes of mixed refuse were also destroyed by the blaze.
The fire is believed to have been caused by unattended burning spreading out of control.
A London Fire Brigade spokesperson said: "We would urge people to consider if their bonfire is necessary and to take care if you’re burning waste at home or at work.
"If you’re having a bonfire never leave it unattended and consider your neighbours if you do decide to have a fire in your garden.
"Make sure you build it clear of buildings, garden sheds, fences and hedges and never use flammable liquids to start it or burn dangerous items such as aerosol cans. Always keep a bucket of water or a hosepipe nearby in case of fire.
“Always check your local authority’s advice on bonfires and follow our safety tips."
The Brigade’s 999 Control Officers took 13 calls about the fire.
The Brigade was called at 1910 and the fire was under control at 2100. Four fire engines and around 25 firefighters from Erith, Bexley and Plumstead fire stations attended the scene.