From Wikipedia, the free encyclopedia Julius Hagen (1884–1940) was a German-born British film producer who produced more than a hundred films in Britain. Hagen originally worked as a salesman for Ruffels Pictures. He then worked his way up to become a production manager in the British silent film industry before becoming an independent producer in 1927. From 1928 he took control of Twickenham Studios and became one of the most... see more