Silwood Park is the rural campus of Imperial College London, England. It is situated near the village of Sunninghill, near Ascot in Berkshire. Since 1986, there have been major developments on the site with four new college buildings. Adjacent to these buildings is the Technology Transfer Centre: a science park with units leased to commercial companies for research.
There are a number of the divisions of Faculty of Natural Sciences that have a presence on the campus. Additionally, Silwood Park is home to the NERC Centre for Population Biology (CPB), the International Pesticide Application Research Consortium (IPARC), and the Imperial College Reactor Centre.
Prior to World War II, Silwood Park was a private residence—the manor house of Sunninghill—then during the war, it became a convalescent home for airmen. The original manor at which Prince Arthur stayed in 1499 was known as Eastmore and was situated on the hill near Silwood Farm. In about 1788, Sir James Sibbald built a Georgian mansion on part of the present house and demolished the old "Eastmore"; he called it Selwood or Silwood Park. The name stems from the Old English for Sallow (Salix caprea Agg.) which presumably grew then along the banks of the streams that flow through the Park. The house was, in its turn, demolished, and the present mansion was completed in 1878.
In 1947, Silwood Park was purchased by Imperial College for entomological research and field studies. Initially, pioneering developments in insect pest management took place, but more recently the emphasis has been on ecology and evolutionary biology. Staff and research students of the Zoology Department were the first college personnel at Silwood when the Field Station moved from Slough, but the department of Civil Engineering has used it since 1947 for courses in surveying. Botany and Meteorology started work there about thirty years ago and the nuclear reactor was opened in 1965. Over a thousand postgraduate students have been trained at Silwood since its establishment, about half of them taking PhDs. They have come from more than sixty countries, and Silwood-trained graduates have gone to almost every corner of the globe. There are over 200 graduate staff and students working there at any one time. Undergraduates from South Kensington attend for field courses and some final-year projects. In 1981, the departments of Zoology and Botany were merged to form the Department of Biology.