Petra Mavis Markham (born 17 March 1944 in Prestbury , Cheshire) is a British theatre, television and film actress. She is a daughter of actor David Markham and writer Olive Dehn (1914–2007). She has three sisters: actress Kika Markham, Sonia Markham, and Jehane Markham.
The Deadly Affair Fragment of Fear (1970) - Schoolgirl No.1Sunday Bloody Sunday Get Carter (1971) - Doreen CarterThe Raging Moon The Hireling (1973) - EdithOut of Depth (2000) - Edna WalkerLady Godiva (2008) - Jemima's Mother (Pink Dragon)Back to the Garden (2013) - PennyZ Cars episode "First Foot" (1964) - Elizabeth CooperThe Children of the New Forest (1964) - Alice BeverleyDoctor Who The Crusade Armchair Theatre Shotgun (1966) - VickyThe Wednesday Play Thirty-Minute Theatre Play of the Month Softly, Softly Z Cars episodes "Vigilance: Part 1" and "Vigilance: Part 2" (1968) - Jill ScanlonCurry and Chips Detective episode "Hunt the Peacock" (1969) - ReneeThe First Lady episode "A Banner with a Strange Device" (1969)Ryan International episode "Pirouette" (1970)Albert and Victoria (1970) - Lydia HackettFollyfoot Thirty-Minute Theatre episode "Something for the Children" (1971) - GirlieAce of Wands 20 episodes (1972) - Mikki DiamondPublic Eye Thriller episode "A Killer in Every Corner" (1974) - HelgaRipping Yarns After Julius (1978)Angels Bergerac Love's Labour's Lost Aliens in the Family (1987) - PetThe Bill The Ruth Rendell Mysteries EastEnders Peak Practice Rich Deceiver (1995) - Bella BeasleyPlotlands (1997) - Grace FosterDoctors 
