I found this set of photos at Stoneleigh, there are also several pictures of Bulldozers, graders, tippers and other vehicles, so I suspect they were engineers.
In one picture there is a sign that says "SEREMBAN DET ..3 PROVOST COMPANY ROYAL MILITARY POLICE", and it all came in an envelope marked "Bert in Malaya".
Some of the pictures refer to "047" on the back and most show an M20 that appears to have C5887047 on the tank.
The serial on this bike is a little hard to read but appears to be C5557104 and the marking on the left side of the tank is probably one of the Malayan badges showing a Kris dagger.
email (option): robmiller11@yahoo.co.uk
Well spotted. Looks like a WD-G3L, hence the acceleration that made the photographer miss the bike!
email (option): rvanmeel@wanadoo.nl
Not often you see nice pictures of these very late war bikes. No steering damper, modified headlamp switchplate and electrics, late sumpguard, 'short' style pillion seat, later pattern rear carrier (the M20 one) and Vokes filter (But no knee grip rubbers?)...from one of the last two wartime contracts, the only ones that had the filter fitted...Ian
email (option): julie@wright52.plus.com