Park called it.<ref>Jan Fleischhauer (April 08, 2011), "Rape, Murder and Genocide: Nazi War Crimes as Described by German Soldiers". Der Spiegel. Retrieved on 9 November 2015</ref></blockquote> Franz von Werra was also interrogated at Trent Park. College conversion In 1947 the estate became a Ministry of Education emergency training college for male teachers, then in 1950 it became Trent Park Training College, a constituent college of the University of London, Institute of Education a residential, co-educational training college. In 1951 the entire estate was compulsorily purchased by Middlesex County Council as Green Belt land. In 1965 the Greater London Council took over the administration of the park and the London Borough of Enfield took over the college. Trent Country Park was opened to the public in 1973. Trent Park Training College became part of Middlesex Polytechnic in 1974, which itself became Middlesex University in 1992. The university's Vice-Chancellor was provided with a residence within the park. Though not so grand as the main house, this nevertheless boasted several small private gardens including a rose garden. In the mid-1990s, Middlesex University and Southgate Sports and Leisure Trust (SSLT) reached agreement to develop the dilapidated university sports ground. In 1997–8 SSLT built a clubhouse and two artificial grass pitches on the site, which was opened in March 1998 as Southgate Hockey Centre. It is home to Southgate Hockey Club, and provides sports and social facilities to the local community. Middlesex University vacated the Trent Park site in October 2012, and in 2013 it was bought by Malaysia's Allianze University College of Medical Sciences (AUCMS) for £30 million, but the buildings were never developed and the college closed in 2014. The house and 50 acres of grounds were sold to Berkeley Housing Group in September 2015. Campaigners wanted a museum opened in the house and were lobbying to ensure that this would become part of the official plan; the Trent Park Museum Trust was successful in this effort. Redevelopment Building of a new housing community began in late 2017, to eventually include 262 homes and flats. Some of the heritage buildings were to be re-purposed into luxury apartments; the plan included a museum on the two lower floors of the mansion, expected to open in 2020. The Middlesex University buildings were removed. Renovation of the mansion was expected to commence before the end of 2019. Landscape restoration on the North Lawn and on the