Londoners reflect on the traumatic events of the 2005 London bombings #7/7 #TheLondonBombings #2005 #LondonBombings #WatchAgain 20 years ago, four bombers attacked central London, killing 52 people and injuring hundreds more. Look back at how events unfolded on 7 July 2005. | BBC One

Powerful commemorations have taken place to mark 20 years since the 2005 London bombings. | Sky News Australia

On 7 July 2005, London was changed forever. Watch 7/7: The London Bombings on iPlayer from the 5th January. #SevenSeven #TheLondonBombings #2005 On 7 July 2005, four bombs exploded in London. Detectives, survivors, emergency services and victims families relive the moment. | BBC One