Sit tight, HH, and dream up things to say when you get that e mail!!
I know that any degree of worry just takes root, and can't be quelled by simple statistics, but King's X has 6 different tube lines going through, a main line station and a local overground station. So you can travel through King's X by loads of routes (especially when you tink that each tube line has two tunnels going in opposite directions) without going anywhere near the affected line.
HH, do you know that he isn't actually out of the country on a short hol, hence no mobile and no answer on home phone etc?
There will be an explanation: There are 15 million people in London, of which, sadly, 50 were lost. Pin your mind on that 15 million to 50 statistic.
I know this incident focusses our worry and panic, and of course it is nothing makes this anything other than an atrocity, but every year more than 3000 people get killed on the roads.
Can you try to distract yourself until you get that hoped for good news?