[1][2] He participated in 3 Formula One World Championship Grands Prix in the 1960s, only racing in the South African Grand Prix event, debuting on 29 December 1962.

Serrurier built a series of racing cars under the name of LDS,[3] after his initials.

From the Cobra Club South Africa: "Louis Douglas Serrurier built about 20 LDS Cobras during the course of his race car building history.

They were all once offs, with different engine, chassis, suspension and brakes depending on the year they were built".

A handful of other custom built bodies found their home on LDS chassis in the 70s.