Just spotted this deal on mobiles.co.uk, Samsung galaxy y (great little android phone) with 300 minutes and 1000 texts plus properly unlimited data. £18 a month but with cashback it takes it down to £7.50.
Done some digging on talkmobile's t's & c's and the Internet usage has no cap at all, check out the link belowhttp://www.talkmobile.co.uk/help/termsandconditions.html
Plus there's £50 cashback through quidco (hurry on this cos it ends on the 6th feb). If you get this and claim your cashback it takes the line rental down to £5.42 for all the Internet you could ever need! A bargain in my books.
First post so go easy and I know cashbacks aren't popular but I think this is a great deal, ordered mine so will update if and when I get it tomorrow!