http://www.gofasterstripe.com/cgi-bin/website.cgi?page=downloads
As I'd predicted with a friend (with their minimalistic approach to packaging, forward thinking attitude in general to comedy distribution, it seemed only a matter of time), Go Faster Stripe have released some of the older shows for download!
2 Stewart Lee performances (one stand-up, one other), and 2 Richard Herring performances.