By using the 15% off code all orders at Tesco Entertainment.
Also using the Quidco for the 8% cashback you can pre-order the game
Call of Duty: Black Ops.
"The seventh main installment of the series and was confirmed to be in production on April 29, 2010. Set in the Vietnam era, the game is in development by Treyarch and will be released November 9, 2010. "