Billy Steuart had the following podium finishes at major championships: 3rd in the 1954 British Empire and Commonwealth Games 4×220 yards Freestyle Relay (with Dennis Ford, Graham Johnston, and Peter Duncan). Steuart also finished fourth in the 1954 British Empire and Commonwealth Games 1650 yards freestyle and sixth in the 440 yards freestyle.
|1956 Summer||Melbourne||Swimming||Men's 100 metres Freestyle||South Africa||RSA||3 h1 r1/3|
|1956 Summer||Melbourne||Swimming||Men's 400 metres Freestyle||South Africa||RSA||6 h4 r1/2|
|1956 Summer||Melbourne||Swimming||Men's 4 × 200 metres Freestyle Relay||South Africa||RSA||8|
|1956 Summer||Melbourne||Swimming||South Africa||Round One||Heat One||3||59.2|
|1956 Summer||Melbourne||Swimming||South Africa||Round One||Heat Four||6||4:43.0|