Thank you Timbersurf. Regarding the buildings; a real mix, some of plaster, some of plastic, and I might even have one of cardboard, but none of them have been left in original paintwork. A mix of manufacturers. I expect that I have all of the original boxes stored away, but I can't for the life of me remember who they were. The facia building CJH was a gift new from a good friend long ago, I recall, so when painting it I put his initials on it.
I must say that since posting these pics it becomes glaringly obvious what work is outstanding. The big warehouse clearly needs "populating" as do several other areas, so these will be next on the list after getting the two Class 20 diesels to work in consist with TTS sound (see my only other thread).
Just found another diorama pic: Jaywick, after rabbits with the dogs: