In 1998, he returned to the United Kingdom and began to make a new career in writing and editing, in particular for the Christian market. He retained his geological interests, however, and led field trips for Wheaton College, Illinois.

In September 2004 he started teaching again, geology and geography, at Gorseinon College, now Gower College Swansea. He taught geology and environmental science there full-time while writing in his spare time.

Under his own name, he wrote The Lamb Among the Stars series. The first two volumes, The Shadow at Evening and The Power of the Night, were republished by Tyndale in October 2006 as one hardback volume: The Shadow and Night. The next in the series, The Dark Foundations, was published at the same time. The last volume, The Infinite Day was first published by Tyndale in May 2008.

In summer 2014 Chris took the opportunity to take early retirement from teaching in order to take up the voluntary position of Mediterranean Conservation Science Coordinator with www.arocha.org. To do this more effectively, he and his wife moved to the south of France, where they are based between the two A Rocha France centres of Courmettes (Alpes-Maritimes) and Tourades (near Arles). He has a particularly strong link with the Domaine des Courmettes.