Archibald James Butterworth was an inventor and racing motorist who, in 1948, designed and constructed the A.J.B. Special, a four-wheel drive Formula One car. He was winner of the Brighton Speed Trials in 1949 and 1951. After a serious accident in 1951, he gave up competition, but continued to supply race car engines of his own design, notably to Bill Aston for the Aston Butterworth Grand Prix car and Archie Scott Brown for the Elva-Butterworth sports racing car.