Four fire engines and around 25 firefighters tackled a fire in a storage container on Maidstone Road in Sidcup.
A steel storage container was destroyed by the fire. There were no reports of any injuries.
The fire is believed to have been accidental and caused by mechanical damage to electrical items within the container.
The Brigade was called at 2220 and the incident was over for firefighters at 2342. Crews from Orpington, Sidcup, Eltham and Bexley fire stations attended the scene.