[Horace]

There's alternatives with much more sensible caps, off-peak allowances etc. Plusnet do a 2mb "lite" service with 30gig *monthly* caps for £15. And that's one of the few companies I've really looked at in depth, I guess there's quite a few other companies doing a similar service for the same money with more logical capping.
ADSL-guide don't seem to provide cap comparison..well not that I've seen from brief visits.