Motor car racing from Brooklands in the rain.
Full title reads: "Brooklands. The 'Double 12' 48 'Speed Kings' in screaming Racers - 'Babys' and Midgets race round at 'breakneck speed' in Motoring's greatest racing test."
Racing drivers run to their sports cars for a pit lane start. The cars speed away from the start. Various shots of cars racing around Brooklands' banked track. Some good shots showing different classes of cars racing.
Cars come past the finish as the chequered flag is waved.
One of the winning cars is wheeled in and the drivers climb up to the podium to receive their trophies. They were driving for the MG (Morris Garages) team. Shots of several winning drivers gathered around their cars. CU of Freddie March, Duke of Richmond, and co-driver Chris Staniland.
N.B. Missing intertitle gives more information: "28 finished - result was a triumph for the Baby Midgets who finished 1,2,3,4."
Researcher indicates that Mr. Cecil Kimber, car designer and driving force behind the M.G. Car Company, is present in the film.