[mudeng]

Thanks Nigel,
The Marking of a diagonal cross on a blue shield would indicate 52nd Inf Div, (Lowland). with 42 on a red over blue artillery sign.
I need to look up my references etc.

This is the only version I have seen with the extended battery/stowage box on the rear, plus the frame and geared set up for the cable laying device.

The example in my photo, IWM series KID 991, 992, and 993, were taken parked by a kerb. It has a set of trade plates 969 PU attached, if you look carefully on the photo of the driver/commanders area, the front headlamp has a number plate with the distinctive triangle tied on to it.

I enclose a stowage diagram for a MkIII AOP, this has the front mouted cable reel plus the rear mounted cable reel.
It shows what I now know, (thank you), the support and fixing for the signal lamp.

Thanks for the info.

George.