Just came on here to look for any Pokémon Black/White Version 2 deals, but couldn't find much. But then I noticed the 15% off £25 @ Tesco Entertainment voucher posted here, so decided to check if this applied. The games themselves are £27.71, which is among the cheapest prices around at the moment anyway, and the voucher works on a pre-order for them. Plus Pokémon games rarely drop in price, so it seems like a good deal to me =) I ordered both for £47.10.
Hope this is useful for someone, though if you can find any better deals on these games, then please post. I'll probably take advantage of it myself =P Hurry though, voucher expires on Saturday, and don't forget you don't have to use it against these games