Found this on ISP Review. Fast4 have removed their bandwith limit and now claim to be truly unlimited.
http://www.ispreview.co.uk/index.shtml
I aint a brain surgeon Bill, but I think we call see the way that will end up...V21 / biscit Gio etc.. etc..
I was trying to work out how much I could download if I kept a machine on constantly, Bill, but my head started to hurt. :) I'm curious to know how (maybe if) they can sustain the 'unlimited' if they pick up a lot of heavy downloaders. I also wonder what sort of throughput they can deliver at peak times.