got this email from phones 4u, i have the code, first come first serve!
www.games4u.co.uk - partner of phones4u!
"Thank you for buying from Phones 4u recently.
As an additional thanks we are pleased to let you know that your recent purchase entitles you to a free £5.00 Discount Voucher at our new gaming site: Games4u.co.uk. This £5.00 voucher can only be used once and is valid against the purchase of any game from the site by simply entering the unique Voucher Code below at the checkout stage: "
it is genuine!