The interior shots (prison) are shot in a studio and the exterior (prison gates) was a real prison.
Michelle "Shell" Dockely:
What you in here for then? Nicking gob-stoppers?
Sharon 'Shaz' Wylie: Triple murder
Sharon 'Shaz' Wylie: You wanna break?
Julie Johnston's surname varies from Johnson and Johnston throughout the series run.
For the ending credits of each episode for series 1 & 2, there was a standard scrolling credits used. Listing all characters in order of appearance.