3 are currently offering a fantastic deal on the Nokia 6700 classic. It is the Internet texter 20 where you get 200 cross network anytime minutes, free phone, free 3 to 3 calls unlimited texts, unlimited internet and unlimited skype calls for £20 a month for 18 months. This was the best deal I could find when shopping around. However to make the deal even sweeter you get £47.50 cashback through Quidco.
A note on quidco: Quidco initially tracks the transaction at £0.00 but within a week it was showing £47.50. Enjoy