Not quite sure how I found the first one or even why, but there's all these websites out there about UK roads and all these people who seem to have catalogued, documented and photographed them. Somehow I've managed to waste an hour and a half looking at this stuff:

http://www.uk-roads.org.uk/
http://www.cbrd.co.uk/
http://www.pberry.plus.com/ukroads/index.html
http://pathetic.org.uk/
http://euclid.colorado.edu/%7Ermg/roads/

And it just goes on and on....