Tesco Mobile, which is O2 offering this daft deal of 500 Minutes, Unlimited Texts and data at just £10 a month with a 1 Month Contract. Tesco also have loads of phones at discounts which are locked to Tesco Mobile so you can end up with a really cheap Phone and Contract.
credit to moin3918
original link: http://www.hotukdeals.com/deals/tesco-mobile-10-month-500-mins-unli/809887
Just asked in a Tesco Phone store - Offer available until 4th Jan.