Step-dads father carried this (we believe) through a fair part of WW2, and also when he moved to East Africa for a period post war.
We THINK he was an officer in the Royal Engineers, his brother in law was Sir Frank Whittle, and we believe he saw action on D-Day. He never talked about the war.. ever. But held a fanatical hatred of Germans until he died in his 90's. Dont think this was standard issue, probably a private purchase. I know these are still made or were till recently- anyone know much about them? Sorry the pics are rubbish, taken with the mobile!