Anna-Louise Plowman (sometimes known as Anna-Louise Stephens) is an actress. She is perhaps best known for her roles as Consultant Anaesthetist Annalese Carson in Holby City and Dr. Sarah Gardner in Stargate SG-1 who was possessed by the Goa'uld Osiris. In 2003 she played Melinda Maclean, wife of British communist spy Donald Duart Maclean, and mistress of spy Kim Philby (played by husband Toby Stephens), in the TV mini-series Cambridge Spies. She played Diana Goddard in the Doctor Who story "Dal