Dear Townleygreen, What a terrible thought! I remember being pre-occupied by that thought as a teenager in the 80's. I couldn't bear to go back to that. Every day when my husband goes to work I hope to God there are is no more terrorism in London, losing a parent can destroy the lives of those left behind. Maybe I am being superficial here (as usual), but if this stuff is going to happen, I am not going to waste the time we have in lovely Dulwich worrying about it. DM