Four fire engines and 21 firefighters and officers have been called to reports of a fire in the practice court area of the All England Tennis and Croquet Club on Church Road in Wimbledon.
The fire damaged around one tonne of mixed building materials, around 20 metres of hedgerow and a small section of a temporary marquee.
The Brigade was called at 1233 and the fire was under control at 1322. Crews from Tooting, Wandsworth, Fulham and New Malden fire stations are at the scene. The cause of the fire is under investigation