I've been trying to post this for ages. Keep getting sidetracked and forgetting the word Mapumental
This is one is one of their samples - "Public transport travel times to Edinburgh International Conference Centre. Arriving by 9am, travelling for no more than 1¼ hours."
This reminded me today -
"It’s high time we updated you on Mapumental, our journey-time mapping project. For those who may not remember, Mapumental is based on a simple idea: to visualise transit times, by public transport, from or to any postcode in Great Britain."
http://www.mysociety.org/2011/10/05/mapumental-mapping-a-new-path