During the opening sequence, the series title is inserted within the depth of the scene. For example, in episode 3 the car in the opening sequence is initially behind the title when it appears, then drives around the end of it, and moves in front of it.
Terry, daughter of crime lord Jimmy Davies, is mentioned by Thompson and Brooks as an extremely vicious person, even more than her father was. They repeatedly contact Terry for instructions, but she never actually appears on-screen.