Funny you say that, Mick, because I was thinking last night what a great model the shed would make. The open roundhouse potentially makes a model which could be viewed from every direction. Guildford Shed, being a half roundhouse may be even easier/better, but possibly neither would work for me as I have models from all regions of BR including diesels! In fact, I suppose that there are very few geographical locations which would work for me in any sort of prototypical manner.
As for dates and allocations, I agree with your description of the situation - I was there! As I mentioned, the data from two sites does not always agree and there was a time, certainly on the Southern, at the very end of steam when there were no allocations as such. I wonder how they managed to provide motive power when it was all at the wrong end of the region!
It's a great shame that none of thee photos are dated, even by year. We can bracket some years after 1961 (wasp stripes on diesel ie 1961) and the average scrapping date, available on one site but subject to a proper interpretation, will give me a compromise date with which I can live.
Thanks for your help again with this subject, Mick. I've just located yet another neg which appears to be taken at the same time. All will follow in good time.
Brian