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On All Things Considered this week (Sunday 23 November at 8.30am, repeated Wednesday 26 November t 6.30pm) Roy Jenkins travels to Llanuwchllyn, near Bala, to meet the author Tom Davies.

Brought up in Cardiff the son of a steelworker, he has been writing for more than 40 years - first as a journalist in Wales, and then in London with the Sunday Times, The Observer and Sunday Telegraph.

His 18 books range from novels to travel, political commentary and personal memoir. He has long been fascinated by the revivalist Evan Roberts, the subject of one of his works of fiction; and much of his life and his writing has been coloured by a series of visions which overwhelmed him when he was a VSO teacher in Malaya in his early twenties.

Tom Davies's books on pilgrimage have introduced readers to some of the most sacred sites to the Christian faith - though some of his other more explicit writing would sit comfortably on very few church bookstalls.