Just spotted this in the most recent CTC magazine. It's another of those 'log your miles, win prizes' things (officially the National Workplace Cycle Challenge 2015). The prizes are rather better than the last one, but I suspect that the chances of winning are rather lower...
Be careful when exploring the site: if you start looking at companies not in Edinburgh, it will decide that you're from wherever they are. I had to clear my cookies before I could persuade it that I wasn't in Jersey...
The challenge starts on 8 June and lasts for three weeks.
I've registered my work site, but not (colleagues at other locations please note) our other sites in Edinburgh.