iPhone 64GB 4S White on O2 in good condition and with warranty till June 2013 .

I have for sale my iPhone 4S 64gb in white on O2. The phone is in good condition having always been kept in a case. I am only selling as I have purchased the iPhone 5. The phone comes with box, charger and headphones. Was purchased from CEX a few months ago in June this year so is covered by their 12 month warranty till June of next year. I will provide the receipt to whoever buys the phone. Cash on collection only.