Hiscock born in Blackheath, London, finished third behind Ivy Walker in the 100 yards event at the 1929 WAAA Championships.

[2][3] At the 1930 Women's World Games in Prague she was a member, along with Ethel Scott, Ivy Walker and Daisy Ridgley, of the British 4×100 metre relay team which won the silver medal.

They sailed for five days from Southampton to Quebec and then travelled a further 3000 miles by train before arriving in Los Angeles.

[5] In the 4 x 100 metres women's relay she won the bronze medal with her teammates Gwendoline Porter, Violet Webb (replacing the injured Johnson) and Nellie Halstead.

[8] In the 1936 Summer Olympics, she won the silver medal with her teammates Violet Olney, Audrey Brown and Barbara Burke in the 4×100 metre relay event.