The Guardian environment bloggers have created a Flickr page in conjunction with Warrington Cycle Campaign (famous for its 'Facility of the Month' web pages and 'Crap Cycle Lanes' book).
You can either add your own, or just glance through the selection that other people have posted. You won't know whether to laugh or cry.
Response to the Mayor's Draft London Environment Strategy
Cyclist killed in collision with lorry in Southall following pedestrian fatality in Redbridge
Canary Wharf - Rotherhithe walking & cycling crossing moves forward