Like everything Commonwealth, there are different Marks of Stretcher depending on when they were manufactured and their intended use. A few of the older wartime stretchers used to lurk about in the back of QMs and 4 Brigade in Germany seemed to be the happy hunting ground for strange odds and ends. Some of this stuff migrated to the Balkans when Lahr and Baden closed in the early 1990s, so quite a bit of 4 Brigade material was used in that theatre.
Attached a photograph of a wartime stretcher slung off a Canadian Grizzly taken at Tomaslavgrad, Bosnia in late 2000.