I'd suggest (like others have), that you make your decision based on handling both cameras, and looking at the lenses the two manufacturers offer. They both offer a fantastic lens range, but both make stand out lenses that aren't equalled by the other brand (for example, the mpe-65mm from canon or the 14-24mm f/2.8 from nikon).
The D7000 might have a slight advantage for ISO performance (I think it's about 1/3-1/2 stop according to DxO tests), and an advantage in dynamic range, but the 7D has more cross type AF points and faster continuous shooting.
In the end, you'll see far more advantage going for the camera that suits your hands and gives you the specific lenses you want, rather than picking one based on looking at specs and numbers. And remember, you are buying into a lens system, so picking one that won't offer you the lenses you want in the future could mean you have to make a costly brand switch sometime in the future.
You can now get a 7D for just under £1k, I'd suggest checking with kerso on here what his current price is.
If you have no need for a super solid body and speed, it might also be worth looking at a 60D or D90, so you can spend more on lenses. Just a thought. And is there any reason why you wouldn't consider the pentax K-5? looks like another great alternative to the 7D/D7000.
Personally, I would choose the 7D. But that is completely irrelevant to you
