After Christian boards the bus there is a car with the number plate DG58EJV
(MERCEDES CLC 200). This is a genuine vehicle so assume-ably it was just on the road when filming as all the main vehicles in the series used fake number plates.
Hannah Laing's warrant card number is 183235.
Lesley Sharp and Steve Toussaint appeared together in Series 4 of Scott And Bailey (s4e4-s4e6 and s4e8).