The campaign, which saw thousands of Britons cut short their daily commute and walk the last stop to work, was created by think-tank British Future along with 15 interfaith groups including Islamic Society of Britain, Amnesty International UK, City Sikhs and St John Ambulance.
British Future co-ordinated the broadcast and print PR for the campaign, establishing a media partnership with the London Evening Standard. The think-tank called on Montfort Communications to handle social media for the event.
The #WalkTogether hashtag was the top trend in London on Twitter and was tweeted by celebrities such as rapper Tinchy Stryder and actress Kim Cattrall.
As part of the campaign British Future held a media event on Monday with Gill Hicks, a survivor of 7/7, and faith leaders from the Muslim, Jewish and Christian faiths. Together the group walked from King's Cross to Tavistock Square to remember those who lost their lives in the terrorist attacks.
Hicks said: "My life and those around me changed forever on 7 July 2005. I believe in the power and brilliance of humanity – my life was saved by strangers. To them, I was a precious human life – my rescue wasn't dependent on my faith, my colour, my gender or wealth.
"Walking Together allows us the time and space to talk, to share and to know the 'other'. Our unity can offer the strength to not only deter anyone from following the path of violent extremism, but to also build a sustainable peace."
The campaign received support from Mayor of London Boris Johnson and mayoral candidates Zac Goldsmith and Tessa Jowell.
Johnson added: "As we mark 10 years since that terrible day, the #WalkTogether initiative is an opportunity to reflect on how Londoners came together in the face of this callous and nihilist ideology, through a simple act of remembrance."