Judy Catherine Claire Parfitt is an English theatre, film and television actress. She made her film debut in a minor supporting part in Information Received (1961), followed by supporting role in the BBC television serial David Copperfield (1966). She also appeared as Queen Gertrude in Tony Richardson's 1969 film adaptation of Hamlet. Later credits include as Vera Donovan in the Stephen King film adaptation of Dolores Claiborne (1995), and in Girl with a Pearl Earring (2003), the latter for which she earned a BAFTA nomination for Best Supporting Actress. She has been a cast member on the drama series Call the Midwife, playing Sister Monica Joan since the show's launch in 2012.