Decent little deal here for light users. You can grab the Motorola Motosmart for a fiver per month (usually £7) on a 24-month contract. That totals £120 over the two years.
The monthly T-Mobile allowance includes 50 minutes, 100 texts, and 250MB of data.
Check out Motorola Motosmart specs and stuff.
(Thanks to infiniti at HUKD)