2013 Heritage Railway of the Year The principal aims, objectives and activities of the charity are the preservation and renovation of the Great Eastern Railway line between County School, North Elmham, Dereham, Yaxham, Thuxton, Hardingham, Kimberley and Wymondham, for education, tourism and operations purposes. Mid-Norfolk Railway Preservation Trust. A charitable company limited by guarantee, incorporated on 23 March 1995 and registered as a charity on 2 June 1995.