Nurse Shelagh Turner – Laura Main
Laura Main will return to the show after starring in every episode of the hit BBC drama.
Alongside the show, she has also taken on roles in hospital-based drama Holby City and Channel 4 series The Mill.
Jenny (The Narrator) – Vanessa Redgrave
Acclaimed actor Vanessa Redgrave will also be appearing in another series of Call The Midwife as the narrator.
The Oscar-winner has starred in films like Julia, Howards End, The Bostonians and Mary, Queen of Scots.
source: express.co.uk