Called to live for Christ. Good Shepherd Sunday challenges Christians to hear God's call to them. For some it leads to making radical decisions about their lives. The service comes from Our Lady and the English Martyrs, Roman Catholic Church in Cambridge. Led by Mgr Tony Rogers with preacher Sister Gemma Simmonds, lecturer in Spirituality and Pastoral Theology at Heythrop College, part of London University. The music is directed by Nigel Kerry. Producer: Clair Jaquiss. bbc.co.uk/sundayworship.