Good lord this thread progressed quickly. I put in an edit, looked back and saw all this!
The EVGA cards that scan has at the moment look good. For some reason, it's listed on the deals page as being Â£9 cheaper. You might want to try buying from there, but I doubt it'll make a difference. Oh, and your power supply should run a 460 just fine.
I'm not sure about scan's shipping prices, but you might want to look at these:
I've had some good experiences with Novatech in the past, and they do offer a reasonable free shipping service if you're looking to save some money.Edited by Korlus - 3/8/11 at 10:20am