Sentosa Buses

Volvo B7RLE/Liannex-ComfortDelgro-with superlong handstraps in front
RU3718U (Red Line)
RU3719S (Red Line)
RU3720L (Blue Line, exchanged with RU3722G early Nov 2007)
RU3721J (Blue Line)
RU3722G (Red Line, exchanged with RU3720L early Nov 2007)
PA4136X (Blue Line)
PA4139M (Blue Line)
PA4144Y (Blue Line)

Second batch-entire bus using regular length handstraps
PA5278M (Yellow Line)
PA5279K (Yellow Line)
PA5286P (Yellow Line)

Volvo B7R/Liannex-ComfortDelgro
PA4137T
PA4138R
PA5451D
PA5456R
PA5478C

Volvo B7R Open Top/Liannex
RU4127T (Red Line)
RU4290D (Red Line)

Mercedes Benz OF1313
RU12S (Green Line) (Scrapped)
RU13P (Green Line) (Scrapped)
RU342P (Green Line)(Scrapped)

Leyland Olympian ONLXB/1RH/Northern Counties
RU402A (Green Line)(Scrapped)
RU403Y (Green Line)(Scrapped)
RU404U (Green Line)(Scrapped)

Mazda T3500
RU382Z
And one other example

Mitsubishi Rosa (Air-Con minibus)
PA3787Z
PA3792H
PA4291E - blue
PA6310X - white
PA6325D - white
PA6326B
PA6349K - Sentosa Cove
and possibly other buses
These buses, together with the lone Toyota Coaster are usually used for Sentosa Cove shuttle and as replacement or beef up services for Palawan/Tanjong Beach Tram and Siloso Beach Tram.

Toyota Coaster (Air-Con minibus)
PB3229M

Mercedes Benz O.309
RU416K (used as Wall's ice cream kiosk)
RU417H (used as Wall's ice cream kiosk)- located at Palawan Beach

Isuzu NQR70P/Liannex (Replica Mosquito bus)
RU4052A (Fort Siloso)
RU4053Y (Fort Siloso)
RU4054U (Fort Siloso)

King Long KLQ6840
PA6301Y
PA6824E
PA7085P

King Long KLQ6121GQ
PA8031M

Woodlands Transport Buses used for Habourfront to Sentosa shuttle and misc. shuttles (may not do Sentosa shuttles all the time)
PA3730L (Isuzu LT133P/SC Auto 'Euroclass')
PA6271A (Isuzu LT134P/SC Auto 'Evolution'; WTS Travel; used for Shangri La Rasa Sentosa Resort shuttle
PA6346T (Isuzu LT134P/SC Auto 'Evolution')
PA6347R (Isuzu LT134P/SC Auto 'Evolution')
PA6358J (Isuzu LT134P/SC Auto 'Evolution')
PA6369C (Isuzu LT134P/SC Auto 'Evolution')
PA6370Y (Isuzu LT134P/SC Auto 'Evolution'; WTS Travel, used for Shangri La Rasa Sentsoa Resort shuttle
PA6371U (Isuzu LT134P/SC Auto 'Evolution')
PH276P (Isuzu LT134P/SC Auto 'Evolution')
PH8668P (Mitsubishi Fuso RM117NSRDEB/Liannex)

and other buses which are operated by Woodlands Transport/WTS in Sentosa

Siloso Beach Tram (Blue Trams)

WB9661A (2 Cars)
WB9662Y (2 Cars)

Palawan - Tanjong Beach Tram (Green Trams)

WB9288U (2 Cars)
WB (2 Cars)