Originally a grass airfield satellite for the RAF Photographic Reconnaissance Unit at nearby RAF Benson, Mount Farm was built in 1940-1941. It had three concrete runways, 49 dispersals (24 concrete pan type plus 25 PSP squares), and eight blister hangars. The 13th Photographic Squadron of the Eighth Air Force moved in during February 1943, and its parent 7th Photographic Group was established at Mount Farm in July 1943. Handed back to the RAF in May 1945, the station was inactive and used temporarily by the Ministry of Supply for ex-War Department vehicle sales. The return to agriculture began in 1949 and the airfield was sold for farming in 1957. Part of the site was then bought for gravel extraction in 1961, and most of the concrete was lifted for hardcore. During 1960-62, the new village of Berinsfield was built on the western end of the site, where RAF and USAAF wartime buildings had been located.