Better than Tesco deal by 1p. Great if Tescos is far away. Popped into Currys today and got it. They come factory sealed which is always a plus in my book! Don't know what the delivery charge is for online so check before buying. Next best price after this and Tesco was Grainger Games coming in at £25.
EDIT: Currys and PC World are the same.http://www.pcworld.co.uk/gbuk/nintendo-pokemon-white-09716610-pdt.html
So check PC world if you don't have a Currys near