I had a comment on my previous post by a chap called Steve Collins who has just started a blog about his fabulous diorama of Isandlwana in 28mm (I must say that when I first looked at it I thought it was 54mm).
I too was a great diorama builder many years ago; both using Airfix 20mm plastics and Tamiya 1/35th for World War 2. Like many people, following an article in Military Modelling, I built a diorama using their Hanomag and Panzer Grenadiers. Oddly, these days I don't take advantage of the diorama opportunities of my wargames figures simply because I don't use element basing so don't have a large enough canvas.
I'm looking forward to learning more about his techniques and seeing some more photos of this amazing work.