When the Fiat car crashes and rolls over it's exhaust is showing . It's supposed to be Electric which don't have exhausts
WILHELM SCREAM - 1 Hour and 7 Minutes in when the paramedic is thrown out of the ambulance.
After stopping the UPS truck Officer Penny tells the driver "I love it when a plan comes together." This line was used by Hannibal on the TV show "The A-Team", a show referenced earlier in the movie.
Several Line of Duty cast members have appeared in alternate versions of the "Batman" universe. Aaron Eckhart as Harvey Dent in The Dark Knight (2008), Dina Meyer as Batgirl/Barbara Gordon in Birds of Prey (2002), and Ben McKenzie as both Batman/Bruce Wayne in Batman: Year One and as Detective James Gordon in Gotham (2014).