Current sites include: Alverstoke, Hampshire (as a tenant of the Institute of Naval Medicine) Fort Halstead, Kent (departure planned since 2011, expected to be complete in 2022) Harwell Science and Innovation Campus, Oxfordshire Porton Down, Wiltshire (headquarters) Portsdown West, Hampshire The former CAST sites at Langhurst, West Sussex and Sandridge, Hertfordshire were closed around 2020 after the 2018 merger of CAST into Dstl. Sections of 150-millimetre-thick (5.9 in) pre-atomic steel plate uncontaminated with radionuclides, recovered from HMS Vanguard, were used for the shielding of the whole body monitor at the Radiobiological Research Laboratory (now Dstl) at Alverstoke, Gosport, Hampshire. Spin-offs Ploughshare Innovations In April 2005 the technology transfer company Ploughshare Innovations Ltd was formed to manage and exploit intellectual property within Dstl. Dstl and Ploughshare Innovations have successfully spun-out several new companies including Alaska Food Diagnostics and P2i Ltd. See also The Technical Cooperation Program (TTCP) – an international defence science and technology collaboration between Australia, Canada, New Zealand, the United Kingdom and the United States. DARPA – US Defence Agency responsible for the development of new technology for the US military. Defence Science and Technology Organisation – a branch of the Australian Department of Defence that researches and develops technologies for the Australian defence industry. Qinetiq – the part of Defence Evaluation and Research Agency (DERA) privatised in June 2001, with the remainder of DERA renamed Dstl. References External links Ploughshare Innovations Aerospace industry in the United Kingdom Biosafety level 4 laboratories Defence agencies of the United Kingdom Defence science and technology agencies Organisations based in Wiltshire Science and technology in Wiltshire Trading funds of the United Kingdom government 2001 establishments in the United Kingdom