Hastings mentions Pan's People to Steve. Pan's People was a dance troupe used in the 1970s on music show Top of the Pops (1964) when the artist of the song being played was not able to appear.
Simon Millar has played four different characters over the course of the series:
- Episode 4.5 Lying Nest (2017) - DC Daniel Brightway (uncredited)
- Episode 4.4 Moral Superiority (2017) - DC Daniel Brightway (uncredited)
- Episode 4.3 In the Trap (2017) - DC Daniel Brightway
- Episode 4.2 Who Sows the Wind (2017) - DC Daniel Brightway
- Episode 4.1 In the Shadow of the Truth (2017) - DC Daniel Brightway (uncredited)
- Episode 3.3 Snake Pit (2016) - Cameraman (uncredited)
- Episode 2.2 Carly (2014) - Passer By (uncredited)
- Episode 2.1 The Ambush (2014) - Mourner (uncredited)
Lee Ingleby (Nick Huntley) & Jason Watkins (Tim Ifield) also worked together on Watership Down (2018) as the voices of Captain Campion & Captain Orchis respectively.
Tim Ifield's birthday is March 3,1966; Jason Watkins was born on October 28, 1966, making him nearly 8 months younger.