Christopher Grey-Wilson was a botanist at the Royal Botanic Gardens, Kew for 22 years. In 2007 he was awarded the Royal Horticultural Society’s highest accolade, a Victoria Medal of Honour (VMH). Phillip Cribb is a leading specialist on the taxonomy and conservation of orchids. He was Curator of the Orchid Herbarium at the Royal Botanic Gardens, Kew, until his retirement in 2006.