Webb born in Willesden, travelled to Los Angeles as one of five women entered by the Women's Amateur Athletic Association at the 1932 Los Angeles Summer Olympics as Britain's first female Olympians in athletics events.

She also featured in the 4x100 metre relay, where she replaced the injured Ethel Johnson, and won the bronze medal with her teammates, Eileen Hiscock, Gwendoline Porter and Nellie Halstead.

[1] Webb competed for England at the 1934 Empire Games, held in London, winning the bronze medal in the long jump.

[2] In 1936, Webb finished second again in the 80 metres hurdles at the 1936 WAAA Championships, behind South African Barbara Burke.

Her daughter, Janet Simpson, won the same medal in the same event at the 1964 Summer Olympics in Tokyo.