Adding to the info SFB has already provided, I found this: http://www.thesparrowsnest.org.uk/index.php?option=com_content&view=article&id=19:keith-leonard-1948-2009&catid=2:blog&Itemid=11
Hi, I've just joined
I remember going to the busker's bar at the Hearty Goodfellows, circa 1999/2000. Had some really good nights there. Also went to the 'open' nights at the Flying Horse around that time.