Episode 1:4: Courtin'
Alan Sinclair notes a MCW Metrobus of McKindless of Wishaw - it's on route 80 to Glasgow.
Episode 2.7: Shooglies
Malcolm Rennie notes "Inside and outside shots of Arriva Scotland West 531 (V531GDS), a Volvo B10BLE with Wright Renown body. The bus is shown both arriving at a stop, and also the rear as it is leaving."
There is also a scene at the Glasgow Museum of Transport and Technology featuring 1938 Glasgow tram 1173:
Towards the end of the episode the villain of the show is knocked down by MCW Metrobus LOA351X in the colours of McColl of Balloch:
Episode 2.8: Buntin'
Malcolm Rennie reports "First Glasgow CM275 (D675MHS) an Alexander bodied MCW Metrobus in allover red livery is seen at a stop in the City Centre."
Episode 4.3: Dial-A-Bus
Malcolm Rennie: "It heavily features inside and outside views of Arriva Scotland Optare MetroRider 218 (P218SGB) with Robbie Coltraine making a guest appearance as the bus driver. It is in Arriva colours but with Dial-A-Bus stickers on side and back."
Episode 5.6: All The Best
Malcolm Rennie notes "Stagecoach West Scotland R84SEF, a Volvo B10M with Plaxton Premiere Interurban body,
seen both inside and out. Also one scene shot in Buchanan Bus Station."