Colin Duriez was for many years a commissioning editor at Inter-Varsity Press UK. He has subsequently appeared as a commentator on DVDs of Peter Jackson's The Lord of the Rings, and BBC television's The Worlds of Fantasy. He is also the author of The Inklings Handbook (with the late David Porter), J.R.R. Tolkien and C.S. Lewis: The Story of Their Friendship, and Tolkien and The Lord of the Rings, and has contributed to definitive reference works relating to Tolkien such as The Tolkien Encyclopedia (Routledge).