[2] Ucko was appointed Program Secretary in the WCC's Office on Interreligious Relations and Dialogue.
[2] In 2003 he delivered the Dr Stanley Samartha Memorial lecture to the Bangalore Initiative for Religious Dialogue, speaking on the topic: "Towards an ethical code of conduct for conversion".
He is an official observer at the International Council of Christians and Jews.
[5] As of 2012 he was a member of the council of the World Day of Prayer and Action for Children, and co-chair of the Arigatou Foundation's joint campaign with UNICEF.
[2] Ucko has written several books and articles on inter-religious dialog.