to rodents. The research programme of the laboratory was extended in 1958 with an additional field station in Worplesdon, Surrey, set up to undertake research into problems in the field caused by birds and mammals other than rodents. Responsibility for the Pest Infestation Laboratory at Slough passed to the Agricultural Research Council in 1959 and in 1970 the laboratory was again transferred, this time to The Ministry of Agriculture, Fisheries and Food (MAFF). Following the transfer, the Pest Infestation Laboratory was amalgamated with the Infestation Control Laboratory at Tolworth and Worplesdon. The newly merged laboratories were renamed the Pest Infestation Control Laboratory. In 1971 management of the laboratory was transferred to the Agricultural Development and Advisory Service (ADAS) a new division within MAFF set up to bring together MAFF's professional, technical and scientific services. In the mid 1970s the Pest Infestation Control Laboratory set up additional field stations in Gloucestershire and Hampshire. Field based research and ecology studies continued at these outstations until transfer to The Food and Environment Research Agency. Harpenden Laboratory In 1914 the Institute for Plant Pathology was set up at the Royal Botanic Gardens, Kew, in response to the growing problem of new pests and diseases being brought into the country on plants collected during international expeditions. Food shortages of World War I, and the realisation that production would need to be increased after the War, stimulated the Food Production Department in 1917 to start an intelligence and survey service on plant pests and diseases. A re-organisation of the Institute in 1918 resulted in the formation of the Plant Pathology Laboratory. The new laboratory took over the Institute's intelligence and survey function and also advised the Minister on the steps needed to prevent both the introduction of destructive new pests and diseases and the further spread of dangerous ones that had already gained a foothold in the country. In 1920 the Plant Pathology Laboratory moved from Kew to a converted private house in Harpenden, Hertfordshire. In 1960 the work of the laboratory had expanded significantly and it relocated to a new purpose-built complex in Harpenden. The new site – in total approximately of land - included 2-3 acres of experimental plots. Work was organised over three departments - Entomology, Plant Pathology and Chemistry - and included the Pesticide Registration Department. An outstation in Cambridge also carried out research on pesticide residues. In 1971 MAFF's professional, technical