The next series of Call the Midwife will feature the show’s first health visitor and first use of a ventouse during a birth.
Set in 1968, it will also be heavily influenced by Enoch Powell’s divisive anti-immigration speech - which saw him ejected from the shadow cabinet.
Show boss Heidi Thomas explained: “The first episode of the new series coincides with Enoch Powell’s famous speech about rivers of blood, which did change the way people of different cultures and ethnicities act with one another, and we felt we couldn’t ignore that.”