Blind Pew - your 'piccy', together with a recent memory jog with another member, takes me back nearly 50 years to a night call-out in Cyprus.
An RAF Regt night drop on Ladies' Mile had 'lost' one man. Long story short, we found him, in the sea, and the recovery produced a previously unknown (generally) important difference between the standard aircrew 'Mae West' and those issued to Paras. The orange 'lifting loops' attached to the front support lobes were continuous (around the torso) in the aircrew version, but only sewn to the front fabric in the Para version. The significance, which I discovered in the worst possible circumstances, was, literally, life affecting. I chased up remedial action as far as my limited influence allowed. The result ? - as far as I'm aware, zilch. Certainly no-one in authority ever got back to me, and, it would not surprise me if the equipment was similarly deficient today.