Found this interesting piece of history on the web today:
"From sprawling factory complexes to newly built suburban streets - by way of some of the UK's top sporting venues and seaside resorts. More than 10,000 images from one of the earliest collections of aerial photography are being made freely available on the web."
Tip: click in the bottom right corner to turn on captions that further describe the photographs.
Heh, they showed the Great Western Railway works at Swindon - I was there a couple of weeks back. It's no longer a railway depot, but a lot of the major buildings are still there, and there's a superb 1930s diesel engine and buffet car in the railway museum.