The trade in horticultural produce and commodities is dependent upon a variety of political and economic factors. An awareness of these and how they affect markets in both the national and international contexts is a vital part of modern horticultural business enterprise. The impact and influence of trade agreements is closely examined as is the role of European directives and international legislation on areas such as packaging and labelling. Assurance schemes such as GlobalGAP, HACCP and BRC or equivalents are also covered as is the role of energy in the chain through to the plate, with the factors of food miles and sustainability dealt with accordingly.