DJ Taylor - Tolkien: the King Under the Mountain

We all know the worlds J.R.R.

Tolkien created.

Since his death in 1973, his major works - The Hobbit, The Lord of the Rings, The Silmarillion - have sold over half a billion copies and been adapted into wildly successful films.

But the man who made Middle Earth has remained an enigma - a deeply conservative Oxford don and Roman Catholic who jealously guarded his private life from an intrusive media.

The novelist and biographer brings us his unravelling of Tolkien's life and work.Talking to Tiffany Murray