Dale Roach's (the paedophile councillor) name when put the other way around becomes 'Roach Dale', which is very similar to 'Rochdale' where a child sex abuse ring was uncovered in 2012.
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)
This episode was also released under the title "The Defence Calls...".
Snake Pit is the third episode of the third series of Line of Duty and the fourteenth overall episode which was first broadcast on BBC Two on the 7 April 2016.