The UK standard 2 disc release seems to be one 4K disc and one Blu. The only place I've found the two cuts of the film on 4K is on that HMV, 4 disc, special set mentioned in my post 13 above.
I think this 'Outpost' is getting an inferior standard release :(
This is due out on Monday 12th here in the UK. None of the usual online sites have a clear enough description to confirm whether, on the standard 2 disc release, the Untitled cut is also on the 4K disc - they suggest that it is only an 'extra' on the Blu Ray... I know I could simply wait and...