Affordable Mobiles has a pretty sweet Samsung Galaxy S II dealio on at the moment. You can grab ye olde i9100 for £79.99 up front and £20PM for 24 months. According to my calculator, that’s £559.99 total over the two years.
Each month, for your £20, you get a Three Mobile allowance of 900 minutes, 5,000 texts and 1GB of data.
Free UK delivery (expected delivery within seven working days).
(Thanks to S23 at HUKD)