Hi there, as mentioned in the post it only collected data on the top 25 startup hubs as identified by the Startup Genome Project (ok, and Amsterdam). Edinburgh is not on that list, so I didn't check for it. I did now: in total it's 3 since january 2012.
Note: not sure why, but the data does seem off from time to time. Manual Command-F for San Francisco for this month's hiring finds 26, while data.scan(htmlpage) finds 28...