Jo Parry is an illustrator whose work spans many fields from publishing, fine art, greetings and stationery, through to children’s books, puzzles, homewares and wall decor. Clients include the RNLI, the BBC and Quarto, and she has developed her own range of giftware for the tourist industry across the south of England.

Susie Pasley-Tyler spends most of her time gardening at Coton Manor. For many years she also ran, and lectured in, the Garden School at Coton.

Jane Powers is the author of The Irish Garden and former gardening correspondent for The Irish Times and The Sunday Times Ireland.

Mathew Prichard is Agatha Christie's grandson, and was, until he handed over the reins to his son, the chairman of Agatha Christie Limited.

Dr Sandy Primrose MBE PhD has spent his professional life as a biologist, initially in academia and then as a senior manager in pharmaceutical, diagnostic and life science companies. He has also worked with various government departments on topics such as the detection of food fraud and the safety of genetically engineered foods. He now works as a consultant helping early-stage companies in the healthcare field. He is a keen gardener and lectures extensively on plants, horticulture and gardening. He is passionate about teaching and aims to be at once entertaining and informative. His previous books include Principles of Gene Manipulation and Genomics, co-authored with Richard Twyman (Wiley-Blackwell, 2006) and Plants, Poisons and Personalities (Librario Publishing, 2010). He lives in Buckinghamshire.

Charles Quest-Ritson is the author of many books on gardens and gardening, including Ninfa: the Most Romantic Garden in the World (Frances Lincoln, 2009) the RHS Encyclopaedia of Roses (Dorling Kindersley, 2011) and Gardens of Germany (Mitchell Beazley, 1998). Charles Quest-Ritson lives in Hampshire and Normandy.

Tim Richardson is a garden columnist in the Daily Telegraph and the author of many books, including The Arcadian Friends  (Bantam, 2008), Avant Gardeners (Thames & Hudson, 2009), Great Gardens of America (Frances Lincoln, 2009), Futurescapes (Thames & Hudson, 2011) and The New English Garden (Frances Lincoln, 2013). He is a trustee of the Garden History Society, sits on the National Trust’s gardens advisory panel, wrote Oxford University’s first garden history course – and is a passionate advocate of fringe gardening. Tim Richardson is the founder-director of the Chelsea Fringe Festival. He lives in London.

Dr Jacqueline Riding is author of Jacobites: A New History of the ’45 Rebellion (2016), Basic Instincts: Love, Passion and Violence in the Art of Joseph Highmore (2017) and Peterloo (2018). She is currently writing a biography of Hogarth. She is a fellow of Birkbeck College, the Society of Antiquaries of Scotland and Trustee of Turner’s House.