PRIME MINISTER Tony Blair yesterday joined the congregation at St Paul's Cathedral for a service dedicated to those who lost their lives in the 7/7 attacks.
Relatives of the dead, survivors and members of the emergency services paid tribute to those who died.
More than 50 people were killed and hundreds injured when four suicide bombers targeted London's transport network during the morning rush hour.
Four special candles - one for each of the bomb sites - were lit in an Act of Remembrance.
Emergency and transport workers, accompanied by bereaved families, carried the candles to the altar.
London Mayor Ken Livingstone read the lesson and the Archbishop of Canterbury, Dr Rowan Williams, gave a sermon in which he said:
"The terrorist is the enemy not just of a system or a government but of the whole idea that we are each of us unique and responsible and non-replaceable.
"If it were true that one victim would be as good as any other, which is what the terrorist believes, the human world would be a completely different place, unrecognisable to most of us."
52 people were killed in the bombing - 32 were UK citizens, the others came from Ireland, Mauritania, Italy, Nigeria, Grenada, Poland, Turkey, Australia, New Zealand, USA, Israel, France, Ghana and Bangladesh.