ooh... That's kinda easy 
Service 80 uses Volvo Olympian 3 Axles, Volvo Mk 4 WA Strider,
Volvo Mk 4 DM 3500, Volvo Mk 2 (Sometimes), Dennis Trident (Pretty
rare, but might be usual in the future, i guess)
Service 82 uses Volvo Olympian 3 Axle, Volvo Mk 4 WA Strider, Volvo
Mk 4 DM 3500, Volvo Mk 3 (Sometimes), Volvo Mk 2 (Sometimes),
Dennis Trident (sometimes)
Service 83 uses Volvo Mk 4 DM, Volvo Mk 4 WA Strider, and sometimes
Mk 2.
Service 85 uses Volvo Olympian 3 Axles, Volvo Mk 4 WA Strider,
Dennis Trident, Volvo Mk 3 (as cameos), Volvo Mk 2
(sometimes)
Service 86 uses Volvo Olympian 3 Axle, Dennis Trident (as cameo),
Volvo Mk 4 DM 3500, Volvo Mk 4 WA Strider. Sometimes Mk 3 and Mk 2
might slot in as cameo.
Service 87 uses Volvo Olympian 3 Axle, Volvo Mk 3, Volvo Mk 4 DM,
Scania N113CRB
Service 88 uses Volvo Olympian 3 Axle, Leyland Olympian 3 Axle,
Volvo Mk 4 DM 3500, MB O.405 WA, MB O.405 DM, MB O.405 DM CAC
Service 89 uses Volvo Mk 3, Volvo Mk 4 DM 3500, Volvo Mk 2
(Sometimes)
Service 27 uses Volvo Mk 4 WA Strider, Volvo Mk 4 DM, Volvo Mk 2,
Volvo Mk 4 Dm 3500 (sometimes)
Service 156 uses Volvo Mk 4 DM 3500, Volvo Mk 4 WA Strider (as
majority), Volvo Mk 3 (as majority), Volvo Mk 2 DM, WA
Service 159 uses MB O.405 WA, DM , DM CAC
Service 501 uses Volvo Olympian 3 Axle, Volvo Mk 4 DM 3500, Volvo
Mk 4 WA Strider, Volvo Mk 4 DM, Dennis Trident
Service 502 uses Volvo Olympian 3 Axle, Volvo Mk 4 DM 3500, Volvo
Mk 4 WA Strider, Volvo Mk 2 (Sometimes), MB O.405 WA, Dennis
Trident
Rachie, hope that this is a good guide for u to know what type of
buses do these svcs use.
