After a Masters in Theology at the Evangelical Faculty of Vaux-sur-Seine on the Gospel of Matthew, Karim Arezki was pastor for 12 years at a church in Paris. He is preparing a thesis at the École Pratique des Hautes Études (Paris Sorbonne) about "The Imam and Jesus: Mediator between God and men in Imamite Shi’ism and Christian theology".

Karim is also involved in the North African Christian community, both in Europe and North Africa. He has chaired the Association of North African Christians since its creation in 2005. He also travels regularly to North Africa to teach.

Karim is married and has two children.

Hatun Tash lived in a Muslim country for 27 years but now lives in the UK. Hatun is the director of DCCI Ministries. She lives an evangelist lifestyle and has a big burden to share the Gospel and to see the church equipped. She has been privileged to engage with Muslims at Speakers’ Corner as well as in mosques every week. She is involved in Christian-Muslim discussions, debates and Bible studies, while also teaching and training Christians to be better witnesses for Christ.