Natasha Goodfellow is a writer, editor and garden lover. She writes for publications including Gardens Illustrated, House & Garden and Country Life and was Fair Manager for GROW London, the contemporary garden fair.

Professional horticulturist Tom Harris has been a keen grower of plants of all types since childhood. His particular interest is in greening unpromising small spaces: he has held a lifelong love for container gardening. In his time he has planted thousands of containers to adorn not only his own plot but gardens throughout the UK and Europe. He occasionally contributes articles to national publications.

Clare Hastings started her career in the fashion department of Harpers & Queen magazine, before leaving to work freelance as a stylist and later as a costume designer. Thirty years later, Clare changed direction to work freelance alongside her daughter, Calypso, in The Indytute.

Tom Hatton is a rising star of garden photography. His photographs for Paradise and Plenty have been widely acclaimed.

Dieter Helm is Professor of Economic Policy at the University of Oxford, a Fellow of New College Oxford, Chairman of the Natural Capital Committee and author of many books including Green and Prosperous Land: A Blueprint for Rescuing the British Countryside (William Collins, 2019), Burn Out: The Endgame for Fossil Fuels (Yale University Press, 2018) and Natural Capital: Valuing the Planet (Yale University Press, 2015).

Charlie Hopkinson is an award-winning photographer of interiors, gardens and portraits, whose latest book, Head Gardeners, also for Pimpernel, won the Garden Media Guild’s Inspirational Book of the Year award (2017).

Architectural photographer Angelo Hornak has contributed to many books, including histories of St Paul’s Cathedral and Westminster Abbey, as well as the cathedrals of Canterbury, Winchester, Wells, Exeter and Ely. Balloon Over Britain is the story of his flight over Britain in a hot-air balloon with a basketful of cameras. London from the Thames takes the reader on a boat trip from the Thames Barrier in the east to Hampton Court in the west, exploring the historic river and the buildings and monuments on its banks.

Catherine Horwood is a social historian with a passion for plants and gardens. Her book, Gardening Women: Their Stories from 1600 to the Present (Virago, 2010) was enthusiastically received. "Horwood strikes gold," said the Guardian. "Packed with lovely detail and quirky stories," wrote the Mail on Sunday. "Gardening Women is rich, full and lasting. Neither gardens nor women will seem quite the same again," said The Times. The American edition appeared shortly after under the title Women and Their Gardens: A History from the Elizabethan Era to Today (Ball Publishing, Chicago). Catherine Horwood’s other books include Rose (Reaktion, 2018), Potted History: The Story of Plants and the Home (Frances Lincoln, 2007) and Keeping Up Appearances: Fashion and Class Between the Wars (Sutton, 2005). She has also written for newspapers and magazines including The Times, Daily Mail, Gardens Illustrated and The English Garden. Her blog, www.gardeningwomen.com, has a worldwide following.