hmmmm, they don't look exactly like the displayed model... , but while you're on your sherlock holmes thing, what about the US Stack Hat, MF floppy hat, the MG's (brits were fielding Minimis like the Aussies)
and the ski goggles, which tend to be favoured by the US and Aussies..
you have a heck of a lot more patience than me...
the SA-80 could be a brit assigned to the unit, the US, Aust, New Zealand and UK regularly spend time in other nations forces as part of cross training. US personnel spend a 2 year tour when they cross over to the Aust SAS. I woould assume that the Brit rotation time is the same.
Theres a lot of contradictions in that shot. I have established that its unlikely to be US Rangers though, their vehicles have been dark green in the past - so thats definitely not european green...
The WMIK cage is actually an american design request that the UK then retro bought for their own SAS vehicles. It was design based on the Australian WMIK which uses a fatter roll of tuve steel.
The LH Gun mount is also the same type and in the same position as the Ranger RSOV Landrovers.
