The Wii U/Mario Kart 8 bundle is currently £219 to preorder at Tesco. Use code TDX-JGCV to bring it down to £199. As has been pointed out on the site already here - http://www.hotukdeals.com/deals/purchase-mario-kart-8-register-with-club-nintendo-get-a-free-wii-u-game-1892551, Nintendo are giving away an extra free game download with Mario Kart 8, making this deal the console and two games for less than £200.
It's a preorder as Mario Kart 8 isn't out until May 30th, but at this price, who cares?!
The games you get with Mario Kart 8 are:
Super Mario Bros U
Game & Wario
The Legend of Zelda: The Wind Waker
Sonic Lost World
Mario & Sonic at the Sochi 2014 Winter Olympic Games
Wii Party U
Monster Hunter 3 Ultimate
Basically, holy mother of God.
★★★★★DISCOUNT CODE ENDS 5th MAY★★★★★