Hi Ian,
Just seen your thread and great to see you are taking on the challenge. I am modelling Tinsley depot and have completed most of my intended project. I have because of space restrictions only modelled two thirds of the depot building. I had a track plan of the yard and numerous photos together with a book by Phil Hodgkiss, a fitter at Tinsley until it closed down, but did not have the plans of the depot buildings like you. I wish I had as my model is an approximation at best.
What did you use for the glazing on the front entrance? It looks great. I had to make do with pencilling acetate for all the glass sections.
I will try to add some images but have had problems before using URLs.
How is the layout going so far?
Alistair.