Maggie refers to Lance as having "a little yellow TVR". Lance actually drives a TR7
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)".
"Kate's gone away? Yeah, she borrowed his car. His little yellow TVR."
and then a short time later says
"What's your name again? Trevor"
Some context: TreVoR Wilkinson is the founder of the TVR car company, the letters taken from his first name. Someone's playing with us.
Laura Checkley (Louise) & Alexa Davies (Kate) also worked together on Cradle to Grave (2015) as Lil & Yvonne respectively.
Gerard Horan (Terry) & Lucy Benjamin (Maggie) also worked together on episode 2.2, Episode #2.2 (2008), of Kingdom (2007) as D.C. Yelland & Patricia Wright respectively.