I'd just like to say that QM's reputation is not a stationary one at the current time, like most of the other universities. The direction it is heading in is up, and if anyone's reputation is going down, in my opinion it's KCL's, due to a number of problems.
I think there is a consensus amongst staff at QM that the law department is under-ranked almost everywhere, (perhaps not in the Guardian :P), but in most places, and they are actively seeking to redress that!
A number of measures are in place, and more will be coming into place to rectify this, and I wouldn't consider QM to be outside the top 10 law departments in the UK.
But it is childish to argue like this, if you disagree, fair enough, things like this can never be quantified to please everybody! It's best just to tolerate other peoples' opinions, even if you disagree