The National Political League (NPL) was founded in 1911 by Mary Adelaide Broadhurst, who had been the Women's Freedom League organizer in Liverpool. The main objective of the NPL was to further social and political reforms on a non-party basis. Members of the group included Janie Allan, Ethel Annakin Snowden, Laura Ainsworth, Muriel de la Warr, George Lansbury, Henry Harben and John Scurr.

On 19th March 1913 the NPL organized a meeting to protest against forcible feeding at Kingsway Hall. It is claimed that over 1500 people attended this meeting.

In 1917 the National Political League changed its name to the National Political Reform League.