Lorraine Harrison has a masters degree in Garden History from the University of London and has written several books on the subject. She is a successful gardener and gardening writer with a passion for exotic and heirloom vegetables. Her previous titles include How to Read Gardens and The Shaker Book of the Garden, and she regularly contributes to Gardens Illustrated and Hortus magazine.
Nigel Henbest has been Astronomy Consultant to New Scientist magazine, Editor of the Journal of the British Astronomical Association, and Media Consultant to the Royal Greenwich Observatory. He is also a Future Astronaut with Virgin Galactic.
The late Terry Hewitt grew cacti and succulents for more than 40 years. He owned and ran the Holly Gate Cactus Nursery and Holly Gate Cactus Garden in Ashington, West Sussex.