The Cat & Mouse Act

One strange feature of women getting the same voting rights as men was the 'Cat & Mouse Act'. 

The Prisoners (Temporary Discharge for Ill Health) Act 1913 (also known as the "Cat and Mouse Act") was an Act of Parliament passed in Britain under Herbert Henry Asquith's Liberal government in 1913. Suffragettes who were undertaking hunger strikes at the time would now be released from prison as soon as they became ill. The strikes themselves were now technically legal. However, the Act allowed for the re-imprisonment of the hunger strikers upon their recovery on their original charges. The nickname of the Act came about because of a cat’s habit of playing with its prey (a mouse) before finishing it off.

From Wikipedia