Not to mention Gene's introduction:
Sam: All right, surprise me. What year is it?
Gene: A word in your shell-like, pal. (slams Sam up against a filing cabinet)
Sam: Big mistake. (shoves Gene away)
Gene: Yeah? (sucker-punches Sam in the stomach) They reckon you've got concussion. Well, I couldn't give a tart's furry cup if half your brains are falling out. Don't ever waltz into my kingdom acting king of the jungle.
Sam: Who the hell are you?
Gene: Gene Hunt, your DCI. It's 1973, almost dinner time. I'm 'aving 'oops.