Cheers chaps!
Sabot, I think the 'white hatch-interior' must be a (silver) spotlight seen from a funny angle, as mine don't have any open hatches (they're cast with closed hatches).
Re the spotlight and commander's MG; that's interesting, because there are lots of photos with both!

I guess the spotlight went out as TOGS came in? In any case, I've hedged my bets because my other squadron (not photographed) doesn't have MGs fitted.

Cheers Dave; Is that while still using SLRs? I suppose a lot of GPMGs got freed up when the regulars got L86 LSWs. Perhaps a bit like WW2 Italy, when the 78th Div allocated an extra Bren per section when one of its brigades was disbanded? On a similar vein, a good mate of mine (ex-41 RM Cdo) told me that when they embarked for the Falklands, the armouries were opened up and they took everything they could - so much for TO&Es! Sections ended up with two GPMGs AND LMG! They also binned CG 84 at San Carlos and instead carried more MILAN firing-posts and ammo.
SJWi, ooo, good luck... I've always loved the idea of doing a Berlin force (mainly due to the chance to field FV432/30) and having that lovely camouflage, but like WW2 Caunter camo, it looks like it'd be too much like hard work.