Samantha Spiro (born 20 June 1968) is an English actress and singer. She played Barbara Windsor in the stage play Cleo, Camping, Emmanuelle and Dick and the television films Cor, Blimey! and Babs, D.I. Vivien Friend in M.I.T.: Murder Investigation Team, Melessa Tarly in the HBO series Game of Thrones, and Maureen Groff in Sex Education. She has won two Laurence Olivier Awards.