The book I read to research this post was Railway Station Architecture by David Lloyd et al which is a very good book which I bought from a local secondhand bookstore. This book is a bit short at only around 60 pages but is quite interesting and looks at the various stations scattered around Britain on a line by line basis. It was first published in 1967 and this book is a 1978 edition so some of the information is probably out of date. Apparently Bath Green Park is the best preserved railway station of the victorian era. Many stations have been torn down including many of great architectural interest. Many others have been turned into other types of building. Some examples were one had been turned into a gymnasium & another into a house. One station of interest which isn't that far from where I live in Birmingham is Malvern, the spa town in the Malvern Hills. This has one of the oldest iron awnings in the country and I have visited there so I know it's still there. The earliest long distance line was London Euston to Birmingham Curzon Street. Later New Street became the main station in Birmingham. Curzon Street became a freight depot for rail freight. Apparently on this route as you entered Euston was a huge ornamental arch which was unusual in that it had no practical purpose. It has long since been torn down but was very impressive. SAVE a charity that tries to save buildings of historical value initially submitted 60 stations for special status as buildings of interest or listed buildings & some other stations have been submitted since.