One episode includes two Stagecoach Manchester MAN/Alexander ALX300, including S117 TRJ (thanks Richard Sharman)
A 2003 episode had a scene with actress Nicola Stephenson running down a street in a bridal gown in Manchester pursued by a tram.
Orla Nutting also recalls "one episode early in this series featured a Stockport Corporation Leyland PD3, possibly fleet number 91 from the GM Transport Museum."