I love the timeline feature, although once in it I struggled to find my way around. 
Didn't think it was too easy on the eye.

I also liked the images in each 'year'. Although, I'm not ao sure it is too accurate (I assume the photo is meant to represent that year - particularly the Big Orange National that I am pretty sure had been repainted well before 1991).
Is there any chance the photos could appear within the thread, as links or even as a header?

As an example, really keen to look at the 1984 photo at Gateshead Interchange, so thought by clicking on it, the photo would appear somewhere in the thread.