Prices and services vary greatly, and this list is probably incomplete.
I've tried to give both the main URL and a link directly into the relevant page, and to a pricing page if that's different; these will go out of date as ISPs rearrange their web sites.
The pricing information is in UK pounds per annum, exclusive of VAT, and may be inaccurate (I'll correct it if you point it out to me); in any case price is only a rough indicator of the facilities offered.
Please note what exactly it is that we're talking about here. We're not talking about straightforward web page hosting. We're not talking about the ISP doing something for the customer on the ISP's computer. We're talking about the ISP hosting the customer's computer, under the customer's management.
If you mail me please give me the URL for the relevant sub-page at the site as well as the main page, as this will save me trawling through the site looking for the right page.
Having said all that, my contact address is ijackson@chiark.greenend.org.uk.
I have to say that many ISPs home pages are utterly awful, often unreadable to those not using netscape, frequently completely devoid of any useful information, sometimes even using obnoxious netscape-isms to turn the WWW into a kind of rich man's television, complete with meaningless flashy adverts.