This Samsung Galaxy S II deal has been kicking around for a while (£99.99 + 12x£30 = £459.99), but if you use the code FREECAR you can currently grab a vent mounted phone holder for your automobile for nowt. Bonus.
For your monthly Talkmobile allowance you get 400 minutes, 1,000 texts and 1GB of data.
The Samsung Galaxy S II has a 4.3in display, 8MP camera and a 1.2GHz dual-core processor (full specs).
(Thanks to goonertillidie at HUKD)