Very odd bussiness model that. Get a (up to) 4 meg line, at £15.50 a month, with 400 free minutes a month (1.5 hrs a week), and 2.5 p a minute after that.
Who would want a line that fast and then have to look at the clock and count the minutes? Use the web for three hours a week, and you pay £25 a month. NTL will give you a capped, but always on 2 meg line for that shortly.
You would end up paying £25 a month for checking your email
And you're forced to take a 'bulldog phone line' at £10.50 as well...