The paragraph below is taken from Wikipedia
During the 1950s and 60s a part of RAF Barnham was set aside as high-security storage facility for nuclear weapons. This area of the site is now a scheduled monument.[1] Earlier than that, Barnham had been used as a chemical weapons store and filling station from 22 August 1939. In the early 1960s, the nuclear weapons storage facility was put up for sale, and now forms the Gorse Industrial Estate. The Chemical weapon store and former chemical weapon filling station, on a site used in the First World War for testing the first tanks.The site has its own web site that can be found here
Situated on the edge of Thetford Heath, this Scheduled Monument to the Cold War is adjacent to a nature reserve
The Address of the site is
Elveden Road, Barnham, Thetford, Norfolk, IP24 2PH