The organisers of Standing Together hope the meeting will build on the success of the group's rally against the social issues last month, where almost 1,000 Christians gathered in Trafalgar Square.
The event was organised by the Ascension Trust, alongside the Anglican Diocese of Southwark, London City Mission and Churches Together in Britain and Ireland (CTBI).
Rev Les Isaac, founder of Street Pastors and CEO of the Ascension Trust told the large crowd: "God does not want spectators in his Church.
"All of us are challenged to put our hands to the plough and do something.
"We need to volunteer. We need to give our time, skill, energy, and intellect free of charge to our community."
Richard Reddie, Director of Justice and Inclusion at Churches Together in Britain and Ireland said in a statement that it was important to build on the momentum from the last rally.
What a Powerful and emotional stand taken this evening in Trafalgar Square by churches, communities, families and officials at the Standing Together Rally. #idmc25 #gospel #kingdom #standingtogether #StopTheKillings pic.twitter.com/1pmQgr44p2
— The Official IDMC (@idmcgospeluk) April 6, 2019
"The Standing Together Rally on 6th April was a fantastic event that told the country that the Church was serious about addressing violent crime," he said.
"However, the real work starts now, and it involves getting all the churches, para-church groups and Christian organisations to utilise their resources, skills, ideas and expertise in a joint effort to tackle serious youth violence.
"This will not be easy, but as people of faith, we must rely on the Lord's guidance and wisdom to let this happen."
Rev Canon Dr Rosemarie Mallett of the Anglican Diocese of Southwark commented: "By our deeds they will know us.
"Prayer is our foundation in all things but as leaders within our various Christian denominations we must also turn our words into tangible action and show the love of God to our young people, their families and all our communities."
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