Edward Stourton profiles Justin Welby, former oil executive and now Bishop of Durham, emerging as one of the most striking candidates for the post of Archbishop of Canterbury. He became a priest after a long business career, and has chaired an NHS trust along the way. When he was Dean of Liverpool he allowed bellringers to play John Lennon's 'Imagine' from the cathedral bells. He has visited Africa regularly, and played a key role in attempts to resolve disputes between parts of the Anglican Communion. So how has someone who has been a bishop for less than a year become a candidate for the top Anglican job? Those who know him, and have followed his career from inside and outside the Church, offer their insights.

Producers:Smita Patel and Chris Bowlby.