Call the Midwife is a British period drama television series about a group of nurse midwives working in the East End of London in the late 1950s, 1960s and 1970s. The original cast consisted of Jessica Raine, Jenny Agutter, Pam Ferris, Miranda Hart, Judy Parfitt, Helen George, Bryony Hannah, Laura Main, Cliff Parisi and Stephen McGann. As of series 14, Agutter, Parfitt, George, Main, Parisi and McGann are the remaining cast members from the first episode.
https://en.wikipedia.org/wiki/Call_the_Midwife