These are for Phil but I'll post them here for everyone's benefit. Feel free to PM or ask any questions. There's some of the two smock patterns and a couple of event pictures for dio reference...
First up is the first pattern Denison Smock (this is the printed pattern variant, there is also an earlier variant where the pattern was painted on to the material with a mop before the smock was sewn together, I can provide photos of this if wanted). The first pattern smock would've been seen from '42 right through to the end of the war and beyond. NOTE: no press-studs to retain the tail at the back of the smock, no tightening tabs on the cuffs, elasticated cuffs, tapered sleeves and collar with half zip.
Individuals would often cut off the tail from the back of the smock (although this was seen as damaging Military property), and its believed that the loose tail went some way towards the Red Devils been given their nickname after the fighting in North Africa along with the famous red beret of course.