Anderson received her Doctor of Medicine in 1900, enrolled in further postgraduate studies at Johns Hopkins Medical School and travelled to observe operations in Paris and Chicago.

[3] Despite her education, Anderson was unable to join a general major hospital, since attitudes at the time opposed female doctors treating both men and women.

[4] On 18 November 1910, Anderson joined her mother, Emmeline Pankhurst, Alfred Caldecott, Hertha Ayrton, Mrs Elmy, Hilda Brackenbury, Princess Sophia Duleep Singh and 300 women to petition Prime Minister Asquith for voting rights.

[6] In 1912, she was sentenced to six weeks’ hard labour in Holloway for her suffragette activities, which included breaking the window of a property at 47 Rutland Gate.

[7] In 1914, Anderson joined Agnes Harben and the new group of women and men: H. J. Gillespie, Gerald Gould, Bessie Lansbury and George Lansbury, Mary Neal, Emmeline Pethick-Lawrence, Julia Scurr and John Scurr, Evelyn Sharp, and Edith Ayrton, Louise Eates and Lena Ashwell[8] in starting the United Suffragists, which grew to have branches in London, Liverpool, Edinburgh and Glasgow.

At Endell, Anderson and the hospital pathologist, Helen Chambers, pioneered a new method of treating septic wounds, an antiseptic ointment called BIPP (bismuth, iodoform, and paraffin paste).

[13] BIPP was widely adopted by surgeons for the rest of the war, although opinion among doctors remained divided as to the best method for wound treatment.

[14]Murray and Anderson were both appointed to the Order of the British Empire as Commanders (CBE) in August 1917, as part of the first group to receive the honour.

The inscription reads:[16][17]To the dear love of comrades and in memory of Flora Murray CBE, MD, BS Durham, DPH.

[18][19] Anderson's name and picture (and those of 58 other women's suffrage supporters) are on the plinth of the statue of Millicent Fawcett in Parliament Square, London, unveiled in 2018.