When I first went on line in 1997, I thought I'd give virgin a try out first. And I'm still there! It's £13.49 for all you can surf and their technical support is top notch. My brother in law (who used to run several ISPs) is now with them and is v.impressed.
I recently signed up the in-laws to Tiscali. Not bad, same price as Virgin but their technical support people are pretty clueless.