With weekly viewing figures that regularly exceed 10 million, Call the Midwife has been a resounding success. The midwifery show, set in the '60s, is propelled by its strong characters and touching stories. Join Jenny Agutter, who plays Sister Julienne, and Emerald Fennell (midwife Patsy Mount) as they reveal the drama that awaits in the fourth series. The pair will be accompanied by executive producer Pippa Harris and writer Heidi Thomas. Under 5s are free but must sit on parent's lap. Child tickets are valid for 6-16 year olds.