Four bombs exploded across the transport network at Aldgate Station, Edgware Road, Russell Square and Tavistock Square.
52 people were killed including former Surbiton High student, 24-year-old Emily Jenkins and Hounslow council worker Ojara Ikeagwu.
The Mayor of London and representatives of the key agencies and emergency services have paid tribute to the victims during the annual wreath laying ceremony.
There was also a personal commemoration service for survivors and bereaved families following the ceremony.
This service included music from the London International Gospel Choir, a series of readings and the laying of flowers by bereaved families and survivors.
