Just ordered one of these from Dial-A-Phone.
O2 Simplicity 30 Day contract - 600mins & Unlimited Texts @ £20 Per month
& Quidco has tracked the £50 CashBack.
Quidco will be paid after 2 months so it works out to be £40 to O2 & £50 back from Quidco, which leave you with £10 Profit and a whole bunch of mins & texts!
(This is only of course if you give your 30 Day notice at the right time!)
You can also keep it going longer for another £20 Cashback at the 6 months stage but I'm planning to give my notice in month 2...
It may not be the right deal for you but if played right it could be the perfect freebie!