This article is not part of the Holby universe. This article covers a subject that is part of the real world, and thus should not be taken as a part of the Holby universe. Jon Sen (born 2 October 1973) is a British director and writer. He has directed multiple episodes of Casualty. He has also written episodes for Holby City. Retrieved from "https://holby.fandom.com/wiki/Jon_Sen?oldid=102851" Categories: Real world articles Production Crew Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.