Redhotant are offering a brilliant free ISP. I signed up about a year ago for £50. I have probably had about £1000 worth of calls out of it. At first the service was a bit slow and dialup took a while as it was often engaged. Late last year they installed another line and changed the dial up numbers and now the service is a lot faster. Unfortunately the site has stopped accepting signups and people who have accounts can no longer renew them. So when your account has run out that is it.