So sky are offering their broadband and line rental only for 15 a month, they give you £75 cash back and tcb give you £66. Delivery is a tenner so I make that £49 for the year. From what I can make out they include sky pay as you talk so you just pay for calls if you make any. Pretty good deal if there's no hidden extras I'd say.
Sky broadband and line rental for new customers £180 + £75 cash back (£49 with tcb) first year