When Sam leaves hospital you see he was staying in Hyde Ward, room 2612. Hyde is the station that he supposedly transferred from. Hyde 2612 is the number he rings to speak to Frank Morgan.
The surname on the headstones of the graves of Sam's 'parents' is Williams. This was originally to be Sam's surname on the show, but Kudos felt that "Sam Williams" was not striking enough. Co-creator Matthew Graham consulted his daughter and she suggested Tyler after Rose Tyler, from Doctor Who (2005).
In the scene in Morgan's car, he produces a folder titled:
Skelton: Boss… That stuff I said, well, I was angry and… I'll pay for the phone and-
Sam: Chris… You're gonna make a good copper.
Skelton: Really? That's fantastic! [ pause ] What do you mean "gonna make a good copper"?
Sam: Our definitions of policing may vary marginally.
Hunt: And yours is?
Sam: Serve the public trust, protect the innocent, uphold the law.
Hunt: Training college?
Sam: Robocop. You can't uphold the law by breaking it.
Sam: You shouldn't be driving with that leg.
Hunt: Well, I am.
Sam: You were shot.
Hunt: And so will you be if you don't get in. Now move it!
Sam: Tell me…
Annie: Tell you what, Sam?
Sam: Tell me what I should do, Annie.
Annie: Stay. Here. Forever.
Sam: All right, then, I will.
Sam: I should be driving, you know.
Hunt: You drive like my Aunt Mabel.
Sam: If you injured somebody in this car it's technically a criminal offence.
Hunt: Oh shut up, you noncey-arsed fairy boy.
Sam: Such elegant banter! Try and keep it under 70. Oh, and radio in for uniform.
Hunt: I don't need plod getting in the way.
Sam: It's procedure. You're not above the law, you know, guv.
Hunt: What are you on about, Tyler? I am the law!
Sam: Yeah. In your dreams.
Sam: She sounds enigmatic.
Carling: No. She was from Barnsley.
Actor John Simm and director S. J. Clarkson both originally wanted the episode to end with Sam Tyler jumping of the roof. However, the BBC said they could not end the show with a suicide.
Music used in this episode:
My Coo Ca Choo by Alvin Stardust
Love Lies Bleeding by Elton John
Decision/Indecision by Atomic Rooster
I Hope I Don't Fall In Love With You by Tom Waits
Over The Rainbow by Israel Kamakawiwo'ole
Life On Mars by David Bowie
One Of The Boys by Mott The Hoople
Changes by David Bowie
A key scene towards the end of the episode refers back to a scene in the first episode, when Sam considers throwing himself off a roof to prove that it is all a dream and to get himself back to 2006. In this episode he decides to throw himself off the roof to get back to 1973.
Carling: Guv's in like Flint.
In Like Flint (1967) is a spy spoof starring James Coburn as Derek Flint. The film title itself was a play on the phrase "in like Flynn", which had come to mean succeeding easily, particularly in the context of seduction.