A few bits dug from the vault and a few found browsing.
First off the 25 inch OS maps.
The NLS have maps from 1899 and 1963. Both reproduced here under
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC-BY-NC-SA) licence as per the NLS terms and conditions.
The squares are 100m to make it easier to scale off.
A few changes in the intervening 60 years, the removal of the loop points probably the most obvious.
Britain from above has just one useful photo (from 1949) and you have to zoom right in on it (Sorry, the small print only allows for a link).
https://www.britainfromabove.org.uk/en/image/SAW026574
It is obvious from this view that the site has been "developed" sometime between 1949 and 1961 (the date of the Francis Frith photo Dave linked to).
I much prefer the earlier version.
My photos now, from 2012.
The second line curved off to the left here. The thing that looks like a w.c. is a small hopper for inbound grain, road now not rail
.
I did take a few inside but much better shots can be found online.
R