It's an RA red / blue Arm of Service plate with a white 'Army' / GHQ bar underneath but it looks as if they hadn't got as far as applying the actual AoS serial at the time the photographs were taken.

Here a link to quite a few colour photos including BSA photos.

http://www.vintag.es/2013/10/colour-photos-of-singapore-military-in.html

Henk

email (option): ahum@quicknet.nl

Many thanks for the link Henk!!
lots of lovely vehicles , quad fordson truck and a lovely civilian austin tourer 8hp. very interesting in marking for models builder...
Arnaud

email (option): leger-arnaud@wanadoo.fr