TheHUT is selling "Command And Conquer 3: Tiberium Wars" for the PC for £9.93, and for the Xbox 360 for £12.93 (inc Del.)
You can also get cashback from the usual sites (e.g. 5% Quidco, making them just £9.43 & £12.28)
Next best price for the PC version is £13.99 from SoftUK, and for the Xbox 360 version £14.89 from dvd.co.uk.
The Return Of Command And Conquer.
More than 35 Single Player Missions - Take your part in a cohesive, elaborate story told from the unique perspective of all three warring factions.
Live-Action HD Video Sequences - Immerse yourself in the Tiberium universe with over 90 minutes of video footage featuring an unparalleled Hollywood cast.
Epic warfare - Engage in the most fluid and intense battles ever waged with explosive visual effects.
Customisable AI - Choose from a variety of unique computer AI styles or tough it out against an adaptive AI that will stop at nothing to win.
Introducing RTS as a sport - Observe, Compete and Broadcast your online matches globally including interactive spectator modes, VolP, live commentary, visual analysis and more.