Ok guys, time to put you out of your misery and pass judgement on this one.
Some admirable captions on what appears to have been a tricky pic... Honourable mentions must go to Kiltrash #53848, Penny Washers #53860 and Dan Generous #53861. The Blue Peter post very close.
But Best in Show goes to treadigraph, not least for managing to work in a Private Pike reference;
"Capt Mainwaring and Sgt Wilson were very glad of their oxygen kit after Elizabeth's vegan sausage roll lunch supplied by Cpl Jones. Pvt Pike luckily had a cold and a blocked nose..."
KST passed down the line to your good self.