The events that attracted an estimated 20,000 people were hosted by lead pastors Mike Pilavachi and Andy Croft.
Responding to the number of new Christians, Pilavachi said: "It's always a privilege and joy to watch young people give their lives to Jesus; there's nothing better.
"We have had some incredible times over the summer when there's been such a tangible sense of God's presence, we've seen people healed and set free by the Holy Spirit in amazing ways, and there have been wonderful times of great joy and celebration. Many bravely came forward for prayer after we tackled issues such as addiction, pornography and depression, and God poured out his grace and love."
Several testimonies shared by the church highlighted the impact the festival had on youngsters.
Noah, 14, said: "Before I came I didn't really believe in Jesus and I wasn't sure about coming, but I went and throughout the week my faith began to grow, then, on the last night, I felt the Holy Spirit, it was an incredible feeling, and later in that session I gave my life to Jesus!"
Rosie said: "I wasn't planning on coming to Soul Survivor this year. I'd had a really difficult couple of years at home which led to me becoming very physically and mentally ill.
"Now, I am coming home with a whole fresh perspective on everything and I am no longer afraid of difficult times because I know the Lord is with me. Praise God!"
Soul Survivor's founder, Pilavachi, announced in May 2018 that Soul Survivor festivals would cease after 2019.
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He explained that leaders believed that "God has spoken, and that this is the right time for us to step aside and make space for others to rise up".
Pilavachi added: "As we look ahead to our final summer we're so encouraged by the stories we've heard of the long-term fruit from people encountering Jesus over the years. We know there is lots more God wants to do next year and we're looking forward to gathering for one final time at Soul Survivor to worship and seek him together."
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