Daphne Wilkinson had the following podium finishes at major championships: 3rd in the 1954 British Empire and Commonwealth Games 4×110 yards Freestyle Relay (with Fearne Ewart, Jean Botham, and the non-Olympian Valerie Nares-Pillow). In the 1954 British Empire and Commonwealth Games 440 yards freestyle Wilkinson was eliminated in the heats. In the British Empire and Commonwealth Games she competed for England.
|1952 Summer||20||Helsinki||Swimming||Women's 400 metres Freestyle||Great Britain||GBR||5 h2 r2/3|
|1952 Summer||20||Helsinki||Swimming||Great Britain||Semi-Finals||Heat Two||5||5:27.2|
|1952 Summer||20||Helsinki||Swimming||Great Britain||Round One||Heat Four||2||QU/=OR||5:16.6|