I love the British and their stiff upper lip. This was a nation that defied Hitler and his V2 rockets and that same spirit seems alive and well today. I hope we would react the same.
At a news conference, Prime Minister Tony Blair praised the police operation and urged Londoners to remain calm.
"We know why these things are done. They're done to scare people and to frighten them, to make them anxious and worried," he said.
Blair, who referred questions on operations to police and emergency services, told reporters: "Police and security services are pretty clear about what's happened.
"The police have done their very best and the security services, too, in this situation. And I think we just have got to react calmly and continue with our business as much as possible as normal."