Families of victims, survivors and emergency service workers joined dignitaries for the 7 July memorial service.

Prime Minister Tony Blair attended the ceremony with his wife Cherie.

The Archbishop of Canterbury told the congregation that those who had died in the bombings "were non-replaceable".

A congregation of around 2,300 people filled St Paul's Cathedral for the memorial service.

The Queen and Prince Philip stood alongside Met Police Chief Sir Ian Blair and other senior officers.

The London bombing sites, King's Cross, Aldgate, Edgware Road and Tavistock Square were each represented by a candle.

A firefighter was among emergency service workers and relatives of the victims who carried four candles to the altar.

London Mayor Ken Livingstone read the lesson at the service.

Crowds gathered at London's Trafalgar Square to watch the service being broadcast on a giant screen.

A "candle of hope" with six wicks was lit by children and teenagers representing different faiths.

After the service the Queen spoke to relatives of victims and was given a posy by Ruby Gray, 7, whose father Richard died in the Aldgate bombing.