Today marks the 11th anniversary of the single worst terrorist atrocity on British soil, when 52 people died and hundreds were injured in attacks on the capital’s transport system.
All of the bombers, who struck three tube trains and a bus, had links to West Yorkshire.
Speaking at a wreath-laying ceremony in Hyde Park, Mr Khan said: “Today, we remember those we lost and the heroic efforts of our emergency services and transport colleagues on that darkest of days. As Mayor, my first priority is to do everything possible to prevent a tragedy like this from happening again.
“By strengthening the bonds between Londoners from different backgrounds and focusing on real neighbourhood policing, we are making it easier for people to speak out and help root out and prevent radicalisation and extremism.”
Mr Kahn said he would ensure “every individual, and every single agency” involved in protecting the city had the resources and expertise to do so.
Mohammed Sidique Khan, 30, Shehzad Tanweer, 22, Hasib Hussain, 18 - who were all from Leeds and Dewsbury - and Jermaine Lindsay, 19, who previously lived in Dalton, Huddersfield, brought horror to London on July 7 2005. Within three minutes of 8.50am, Tanweer detonated his bomb at Aldgate, Khan set his device off at Edgware Road and Lindsay blew himself up between King’s Cross and Russell Square. Hussain detonated his device on a bus at Tavistock Square at 9.47am.