 On the outbreak of World War II, Royal Engineers companies of 1st London Division of the Territorial Army mobilised at Hurst Park Racecourse before proceeding to France to join the British Expeditionary Force.In October 1941 "A" Company of 70th Battalion The Middlesex Regiment (Duke of Cambridge's Own) moved into Hurst Park Racecourse for several months before moving to Hounslow Barracks with the rest of the Battalion.Some of the racecourse was kept as public access to the riverside Hurst Park, with the remainder sold for the building of the present varied height residential housing in 1962.