Hertfordshire, and Trawscoed in Wales, the primary remit of the bee units was disease monitoring and control of bee diseases. In 1979 the units were amalgamated to form the Agricultural Development and Advisory Service (ADAS) National Bee Unit (NBU), located at Luddington Experimental Horticulture Station, just outside Stratford-upon-Avon. The ADAS NBU provided statutory and advisory services to MAFF and beekeepers throughout England and Wales on all aspects of apiary management and bee health as well as carrying out R&D work. In 1991, following the privatisation of ADAS, the NBU joined CSL and in 1994 took on the responsibility of the MAFF Bee Disease Inspection Service. History - timeline Key dates on the timeline to the formation of CSL: 1988 The Harpenden Laboratory and the Pest Infestation Control Laboratory, both operating within the Agricultural Science Service of the Agricultural and Development Advisory Service (ADAS) - a division of the Ministry of Agriculture, Fisheries and Food (MAFF) - come together under single management. Forerunners of CSL, the laboratories share common scientific objectives in relation to the safe and efficient production of food and the protection of the consumer and the environment. Central Science Laboratory is officially launched still operating within ADAS. 1991 One outcome of the Government's 'Next Steps Initiative' is the decision to privatise the advisory service of ADAS along with its research activities. CSL is identified as a candidate for Executive Agency status of MAFF and at this stage separates from ADAS. The National Bee Unit (one of the advisory services of ADAS) joins CSL. 1992 Official launch of CSL as an Executive Agency of MAFF. Re-launch of CSL as an enlarged Executive Agency following merger with MAFF's Food Science Laboratories based at Norwich and Torry, Aberdeen. 1996 CSL relocates to Sand Hutton, with the exception of field stations in Gloucestershire and Hampshire and the food safety work undertaken at Norwich. 1998 Remaining staff and work at Norwich relocate to York. 2001 MAFF is disbanded. CSL becomes an Executive Agency of Defra. 2009 On 1 April 2009 Central Science Laboratory merged with Defra's Plant Health and Seeds Inspectorate, Plant Varieties and Seeds, Defra Plant Health Division and the Government Decontamination Service to form The Food and Environment Research Agency, an Executive Agency of Defra. See also National Bee Unit Notes and references External links The Food and Environment Research Agency: official site National Collection of Plant Pathogenic Bacteria: official site