Equally adept in singles and doubles she won two women's singles titles and four women's doubles titles at the prestigious All-England Championships between 1933 and 1937.

[2] In the 1935–1936 season, she achieved a British "Grand Slam" by winning the open singles titles of England, Ireland, Scotland, and Wales.

[4] Though reaching 40 in the early 1950s, she continued to play highly competitive singles matches against such formidable opponents as Ethel Marshall, Margaret Varner, and a teenage Judy Devlin (Hashman).

Thelma Kingsbury was among the initial class of players elected to the U.S. Badminton Hall of Fame in 1956.

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