Dr Mark Baldwin After Dr Mark Baldwin graduated from Cambridge, he worked on a variety of engineering projects, before lecturing in the Civil Engineering Department at Imperial College, London. He moved to Shropshire to grow a book-selling and publishing business, when a chance encounter with a book about the Enigma machine piqued his interest. Fast forward 20 years to Mark becoming one of the world's foremost experts in the history, human story and workings of the machine. Mark will join you on Across Europe (April 30, 2020) and Romance of the Rhine and Main (April 30, 2020). 10 Oz Clark Oz's passion for wine dates back to his student days at Oxford University. There he won the first of many tasting competitions at an (unusually) young age, and he has since earned a formidable reputation as one of the finest palates in the business. Oz will join Majesty of the Middle Rhine (August 15, 2020) to share his extensive wine knowledge and expertise with guests. John Sergeant John Sergeant is probably best-known for his 12 years spent as BBC television's Chief Political Correspondent. John reported from dozens of countries, including covering conflicts in Vietnam, Lebanon and Northern Ireland, and was based in Dublin, Paris, New York and Washington DC. The award-winning writer and broadcaster also enjoyed a famous turn on Strictly Come Dancing and has presented programmes including Have I Got News for You and Question Time. John will join you on Romantic Rhineland (August 1, 2020).