For hundreds of thousands of people commuting into London, the morning of July 7, 2005 began just like any other. But at the peak of the rush hour, bombs were detonated in three crowded subway trains and aboard a London bus. At least 52 people died, along with four bombers, and 700 were injured. A week later, millions stood in silence to honor the victims of the deadliest attack in Britain since World War II. A week after that, the transport system was hit again - with attempted explosions on three more Tube trains and another bus.

• Queen, Blair honor bomb victims
• New report on police tube shooting