Counter-terrorism

I should like to take the question asked by my right hon. Friend the Member for Wokingham (Mr. Redwood) a little further. Two years ago, the tube was attacked, and I have no doubt that it remains a vulnerable and desirable target for our enemies. A series of recommendations was made to improve tube safety, not least relating to the ability of the police and emergency workers to communicate between surface and tunnel. That is still not in place two years later. Why not?