British Prime Minister David Cameron on Wednesday said those killed in the 2005 London bombings would "never be forgotten", as low-key ceremonies marked the fifth anniversary of the attacks.
The July 7, 2005 suicide bombings on three London Underground trains and a bus left 52 innocent people dead.
No official commemoration events took place, although wreaths were laid on behalf of Cameron and London Mayor Boris Johnson at the official memorial to the victims in London's Hyde Park.
Many survivors and relatives of victims gathered for private ceremonies at the sites of the four explosions.
The attacks were carried out by British Muslims as London was still celebrating the decision announced the previous day to award the city the 2012 Olympics.