bArt2 is correct. If you think British politics is complicated with devolution and the like, you have not seen Belgian politics yet, especially where it concerns Bruxelles... It's insanity. But that's another matter altogether.
25R had to be used because it was the only rway left (25L/07R is too close to the incident to allow flights, although 07R would be more ideal because of the noise patterns).
Oh well. No doubt we'll soon hear what the deal is. BBC still reports that they don't know what's on the plane (r-i-i-i-i-i-i-g-h-t!)
S.