First time post and it may be too late but I hope it helps someone!
GAME store in Lakeside Thurrock (the store on 1st floor not second), will have Nintendo Wii on sale tomorrow morning (19th Dec) at 9:00am.
Stocks are limited and it is only available to collect.
It has to be bought in a pricey pack though - 500 quid!
For this you get Wii, 7 games titles, extra controller, memory card and accessories.