Leonie Elliott, who joined the cast in series seven to portray Jamaican midwife Lucille Anderson, is also of Jamaican descent. Like Lucille, her family came to the UK in the 1960s. Her father's sister moved to the UK to train as a nurse like thousands of other women from the West Indies, and her mother's family came from Mandeville, the same parish from which Lucille originates.
When Vanessa Redgrave (the voice of mature Jenny) appears on screen for the first time, the on-screen caption gives the date as 2005 and her husband Philip (Ronald Pickup) suggests she write her memoirs. However by 2005, the first two volumes (Call the Midwife and Shadows of the Workhouse) had already been published.