Dr David Jacques, is a landscape historian and conservationist. He was influenced by the environmental movement of the early 1970s, and became committed to exploring the right relation between people and the land, giving him an abiding interest in the history and theory of landscape. He has since written several books and numerous articles on garden and landscape history, for which he is perhaps best known. His first foray into landscape appreciation was in 1980 when he criticised the landscape-evaluation methods of the day in the Journal of Environmental Management. His views on this topic developed when working on landscape-planning and highway-alignment projects for consultancies, and also from 1987 when he became responsible for the Register of Parks and Gardens of Historic Interest as the Inspector of Historic Parks and Gardens at English Heritage. In the early 1990s he was central to the campaign to revise UNESCO’s criteria for world-heritage sites to allow the recognition of cultural landscapes, and in the 2010s has several times assisted the International Council for Monuments and Sites (ICOMOS) in its advice to UNESCO over nominations for them.