"My wife and I live in Hook of Holland, on the south west coast of the Netherlands, approximately one mile from the shore.
"This morning, just after seven Dutch time, the roof of our house suddenly cracked. We were both awake and heard it. This alarming sound (there was no wind at all and everything was very quiet) was directly followed by two very heavy thunderlike sounds, obviously far from our home.
"After we watched Ceefax on the Dutch television we realised that we must have been witness of the shockwave and the sound of the blast of the explosions near London.
"Considering the fact that we live about a hundred miles from London we thought it might give some idea of the intensity of the explosions."