Bishop Justin Welby has been enthroned in London as Archbishop of Canterbury. The 57-year-old was formally sworn in as head of the Church of England and spiritual leader of the 77 million-strong Anglican global communion. In his first sermon, he said: “There is every possible reason for optimism about the future of Christian faith in our world and in this country.” Representatives of the world’s major religions were among the congregation for a service blending the traditional and modern, with hymns, African dancers, Punjabi music and improvised organ music. A strong African element to the service reflected the archbishop’s ties with the continent through his former job as an oil executive and most recently in peace and reconciliation work. Archbishop Welby, is married with five children. He went to school at Eton, and later Cambridge University. He rose to the top of the oil industry – ending up as treasurer of Enterprise Oil – and gave up a six-figure salary to train as a priest. He was a vicar in Warwickshire, a canon of Coventry Cathedral, and the Dean of Liverpool, before being appointed as Bishop of Durham in November 2011. Archbishop Welby, the 105th Archbishop of Canterbury, takes on several roles – Bishop of Canterbury, head of the southern province of the Church of England, senior bishop of all England and spiritual leader of the worldwide Anglican communion.