Five fire engines and around 35 firefighters were called to a warehouse fire on Crabtree Manorway North in Belvedere.
A small part of a timber framed warehouse was destroyed by fire.
The Brigade's 999 Control officers were called at 2349 and deployed fire crews from Erith, Bexley, Plumstead, East Greenwich and Eltham fire stations. The incident was over by 0105.
The cause of the fire is deliberate and under investigation by the Brigade's fire investigators and the Met police.