a concert in 1914 to raise funds for the "Scottish Lassie" Motor Organisation Fund which supported the Scottish Women's Hospitals for Foreign Service, and organising a number of events for the British Sportsmen's Ambulance Fund in 1916. In 1915 World War I, and again in 1923, Billington-Greig substituted for her husband at the billiard company where he was a manager, and in 1936 she worked briefly as an organiser for the Business and Professional Women's Club. In 1931, she chaired the founding meeting of the Women's Billiards Association, and became the first vice-chairman, and acting honorary secretary, of the organisation. She re-joined the Woman's Freedom League in 1937, and continued to be involved when after World War II it became known as Women for Westminster. She was also a member of the Six Point Group, and was meanwhile working on a history of the suffrage movement. She compiled suffragette biographies as well as writing on the movement's general history. She wrote articles critical of the policies of the suffrage movement, including "Feminism and Politics," published in the Contemporary Review in 1911, in which she wrote, "there is no feminist organization and no feminist programme. And though the first is not essential, the second is." Her book The Militant Suffrage Movement was published in 1911. Historian Brian Harrison has described The Militant Suffrage Movement as "the most penetrating contemporary comment on the suffragettes", noting that it is an unusual combination of participant observation and analysis. She made similar criticisms in an article in The Fortnightly Review, "Militant Methods: An Alternate Policy," claiming that "[t]he militant movement has kept to a straight, narrow way, and, lest it should touch life, it has cloaked itself with artifice and hypocrisy." In place of the militant methods then common, such as attacks on property, she recommended that suffragists try new tactics: "On one matter [a] protest could be made within the Police Court, on another outside, in public meetings, and in the public Press ... Strikes and boycotts could be employed on new feminist lines." Her short book The Consumer in Revolt (1912) explored links between consumerism and feminism. According to historian Matthew Hilton, "Billington-Greig aimed to add consumption to the arenas around which women could organise". Her work was widely read and discussed in the United States. She died of cancer on 21 October 1964 in London. Her archives are held at the Women's