In the pilot episodes, Waking the Dead: Pilot: Part 1 (2000) and Waking the Dead: Pilot: Part 2 (2000), Detective Superintendent Peter Boyd (Trevor Eve) had a wife and baby. However, by Waking the Dead: Burn Out: Part 1 (2001) and Waking the Dead: Burn Out: Part 2 (2001), he is single and instead has an elder son, who is missing.
Dr Grace Foley:
Shut up, Spence. All you're worrying about is that Boyd's let you down. You put him on a pedestal and he's fallen off.
DS Spencer Jordan: That's rubbish!
Dr Grace Foley: No, it's textbook.
In S1 Mel in the episode of a Simple Sacrifice says she is born in 1975, in S4 in the episode of Figue States when she talks about being adopted she is born in 1979 en at the end of S6 in the episode of Yahrzeit you can see on her gravestone that she is born in 1976.
US broadcasts were cut down to approximately 50 minutes per episode to allow room for commercials.