[3][a] During World War II, Hindmarch was a corporal in the Auxiliary Territorial Service, leading a small team involved in radar location in South Wales.

[4] Hindmarch won the London and Home Counties division of the Ladies' snooker championship in 1959, and for six years consecutively from 1965 to 1970.

In English Billiards, Hindmarch was five times London and Home Counties champion, including from 1967 to 1969.

[4] Hindmarch won the Women's Billiards Championship in 1962, winning a three-hour final against Rae Craven 438–385.

[7] In the 1971–1972 season, Rae Craven and Hindmarch became the first women to enter the English Amateur Snooker championship.