The Nikon D7100 is now finding it's way into UK dealers, at the time of writing, Wex had it in stock.
Note though that they also have D7000 for £642, and Nikon are offering £100 cashback, giving a net price of £542. That's a great deal.
It's also about half the cost of the D7100, IMHO it's difficult to find a compelling reason to spend twice as much, unless you need to print A3 or bigger.
Of course soon we will start to see some authoritative in-depth reviews, and really begin to understand the impact of the omission of a lowpass filter, at which point I might change my opinion!