I did a web design gig for a WiFi café in Holborn today; the results are here. Note that it's still not fully finished; some of the background images require tweaking to de-uglify them and make the text legible. Anyway, it's an income; not quite a living (not with London rents being what they are), but better than nothing.
The cafe is decent, though the coffee is of London standard (i.e., not quite up to Melbourne standard), and the owner's taste in music gets a tad repetitive sometime (he seems to have a few CDs and isn't afraid to put them on repeat). They have free/cheap WiFi if you bring in your laptop, though.