Second time that real life mother and daughter, Diana Rigg (Veronica) and Rachael Stirling (Becky), have played Mother and Daughter. The previous was in Doctor Who's "The Crimson Horror (2013)".
Terry (Gerard Horan) talks about they have lost the barbecue to the Framlingham Sausage Fest - a wink to the fact that both series are actually filmed in Framingham in Suffolk.
Laura Checkley (Louise) & Alexa Davies (Kate) also worked together on Cradle to Grave (2015) as Lil & Yvonne respectively.