Virgin.net is £24.99 per month for 24/7 unlimited Internet access. No session limits, no complex T&Cs - it does what it says on the tin. Simple, easy to use and no problems so far. Plus there's a back-up dial-up facility in case your ASDL modem goes on the fritz.
I'd far sooner know where I stand with unmetered Internet access like this than be tied-in to some 'including phone calls, second number, certain TV channels...' deals. Personally I'll stick with TV companies for TV, phone companies for phone/fax services - and ISPs for Internet!