To be honest, there's not much else that can be said is there. Great period photo but the rifles except 5th man from left are odd-balls (Non standard No4T's probably being tested against the standard No4T that is the control sample.

How accurately the rifle with the shortened fore-end shoots can only be guessed at as we KNOW what happens when you cut the fore-end off! The Lymans.........., well............, anyway let's pass! The Britishicon certainly gave it the thumbs down in no uncertain terms. The eye relief on the two on the right (No67's?) looks too short to me too.

The snow smocks are interesting. We used to have a similar thing here, but camouflaged, called a 'smocks, windproof' and were issued up until the mid 70's and was well liked by the snipers over the suggested paratroopers smocks as it was longer, windproof of course and if washed in a water repellent wash, was sort of waterproof.
There, some comments to get your teeth into