A Bird in a Cage uncovers the story of Margaret Mackworth, also known as Lady Rhondda, a hugely influential figure from South Wales whose groundbreaking work for women’s rights has largely gone unrecognised. This film looks at a life in which she headed the Newport branch of the suffragette society the WSPU, challenged the House of Lords, went to gaol for burning a postbox, became a successful business leader, founded an eminent political and literary magazine, and even survived the sinking of the Lusitania. Through a combination of interviews, archive footage and traditional cut-out animation developed through workshops at local schools, Lady Rhondda’s rich life is finally brought to light.