Six fire engines and around 40 firefighters tackled a fire on a converted barge near Cadogan Pier in Chelsea.
Most of the main deck of the barge was damaged by the fire. There were no reports of any injuries.
Control Officers received the first of six calls at 2206 and mobilised crews from Chelsea, Battersea, Kensington and surrounding fire stations to the scene. The fire was under control by 2313.
The fire is believed to have been accidental and caused by a floor lamp coming into contact with combustible materials.