Christopher Brickell, former director general of the Royal Horticultural Society, is an eminent horticulturalist. In 1976 he was awarded the RHS Victoria Medal of Honour for his services to horticulture, followed by the CBE in 1991. A former editor of The Plantsman, he has published many botanical and horticultural papers and articles, and chaired the International Commission for the Nomenclature of Cultivated Plants. In 1990 he was editor in chief for the first edition of Dorling Kindersley's bestselling Royal Horticultural Society Encyclopedia of Plants & Flowers (now in its fifth edition and with sales of more than a million copies in the UK). This was followed by the Royal Horticultural Society Encyclopedia of Gardening, Royal Horticultural Society A-Z Encyclopedia of Garden Plants, and Royal Horticultural Society Pruning & Training. He has completed full updates of both the A-Z of Garden Plants and Pruning & Training.