Radio and space research at slough 1920ߝ1981

1981 saw the end of 61 years of radio science at Ditton Park, Slough?apart from routine ionospheric sounding, which started in 1931 and will continue. The Radio Research Station, formally constituted in 1927, was renamed Radio and Space Research Station in 1965 and Appleton Laboratory in 1973. Following the merger with the Rutherford Laboratory in 1979, the Appleton Laboratory's work has been transferred, mostly to the Rutherford Laboratory site in Oxfordshire. This article describes subject by subject, rather than strictly chronologically, the major trends of the work at Ditton Park since 1920.