Four fire engines and around 25 firefighters attended a fire at a workshop on Sheepcote Lane in Orpington.
Firefighters tackled a fire at a single storey detached workshop, which was destroyed by the fire.
The Brigade were called at 0336 and the fire was under control at 0440. Fire crews from Orpington and Sidcup attended the scene.
The cause of the fire is being investigated.