Serrurier entered three Formula One World Championship Grands Prix during the 1960s, all of them at the South African Grand Prix, which in that period served as the sole World Championship round held on the African continent. He made his championship debut on 29 December 1962. Across his three championship starts he scored no points, placing him among the large cohort of privateer drivers who contested individual rounds without achieving a points finish in the fiercely competitive Formula One fields of the decade.
In addition to his championship entries, Serrurier also participated in non-championship Formula One events, which were a regular feature of the racing calendar during that era and provided additional competitive opportunities for both works teams and privateers.
Serrurier's other significant contribution to motor racing was as a constructor. He built a series of racing cars under the marque name LDS, derived from his own initials — Louis Douglas Serrurier. The construction programme was substantial for a private effort: the Cobra Club of South Africa records that Serrurier built approximately 20 LDS Cobras over the course of his career, each one individually specified with different engines, chassis configurations, suspension setups, and braking systems according to the year of construction and the intended purpose.
The first LDS car used a Cooper as its mechanical basis. Later builds drew on Brabham components, following the pattern of many contemporary privateers who used the rolling chassis of successful British constructor teams as the foundation for their own bodywork and modifications. A handful of additional custom-built body styles were also fitted to LDS chassis during the 1970s, including aluminium coupe and convertible variants as well as the more prevalent fibreglass constructions.
The LDS cars were raced primarily by Serrurier himself, but also by Sam Tingle, another South African driver who competed in the Formula One World Championship during the 1960s and who shared the environment of South African motor sport with Serrurier throughout that decade.
Serrurier died on 4 June 2006 at the age of 85. His legacy is twofold: as one of a small number of drivers from countries outside Europe and North America who managed to reach the Formula One World Championship during its early decades, and as a constructor whose LDS marque represents a genuine indigenous contribution to South African motor racing at a time when the sport in that country was beginning to build the infrastructure that would eventually support world-class events. The combination of driving and constructing activity places him in a distinguished but small tradition of racing men who built their own cars and then raced them at the top level.