Somervillians include Prime Ministers Margaret Thatcher and Indira Gandhi, Nobel Prize winning scientist Dorothy Hodgkin, television personalities Esther Rantzen and Susie Dent, reformer Cornelia Sorabji, writers Marjorie Boulton, A. S. Byatt, Vera Brittain, Susan Cooper, Penelope Fitzgerald, Winifred Holtby, Nicole Krauss, Iris Murdoch and Dorothy L. Sayers, politicians Shirley Williams, Margaret Jay and Sam Gyimah, Princess Bamba Sutherland and her sister, biologist Marian Dawkins, philosophers G. E. M. Anscombe, Patricia Churchland, Philippa Foot and Mary Midgley, psychologist Anne Treisman, archaeologist Kathleen Kenyon, actress Moon Moon Sen, soprano Emma Kirkby, banker Baroness Vadera and numerous (women's rights) activists.