Workmen racing against time to finish new police college . Workmen are racing against time to complete the new police college at Hendon which is to start operating shortly . In one of the rooms ' murders ' will be staged on a platform from which Lord Trenchard will sometimes lecture the future police chiefs of England . Behind the platform is an operating box for showing the latest films . The first arrivals are expected in April . Photo shows , the new police college at Hendon . 3 April 1934 30s, 30's, 1930s, 1930's, thirties, nineteen thirties