Tesco are giving away a £250 voucher with certain phones, which you can then spend on anything in store or online. Great deal if you are after one of the qualifying phones.
You get the full amount if you sign on the dotted line for a Sony Ericsson Cedar or Samsung S3100.
The Samsung Europa and Samsung Wave Scotia come with 200, the Nokia 6303i with 150 and the BlackBerry 8520 with 100.
Tesco says the offer is unconditional and will run until 31 December. That said, you have to put pen to paper by 10 December in order to get the dosh before Christmas.
Type "250 tesco mobile" (without quotes) in to Google to get to direct links. I did post them but they seem to have been removed - not sure why.