Went into Tesco today. They are offering 250 extra Clubcard points on various games. One of these was Mirrors Edge priced at £8.
This will give at least £10 worth of vouchers when multiplied by 4 as part of the Clubcard deals.
So £8 gets you a game and £10 worth of Clubcard vouchers. Bargain!
Not sure how to post images so here's the photo hosted elsewhere: http://img517.imageshack.us/img517/185/img0089iv.jpg
hope this is of use to some people.