Jonathan Stoneman worked for the BBC for 20 years as researcher, producer, reporter, editor and finally Head of Training at World Service. Specialising mainly in central and eastern Europe, Jonathan reported for World Service from virtually every country of the former Warsaw Pact in the 1990s, before moving on to run the Macedonian and then the Croatian language services. Since 2010 Jonathan has worked as a freelance trainer – mostly with data and the Open Data movement. Tracking the use of Open Data and learning new techniques to make the most of it has become something between an obsession and a hobby.