Dyson on: Hullavington chronicles the history of Dyson's latest building project, the restoration of Hullavington Airfield, UK. In the heart of rural Wiltshire this historic airfield was instrumental in the airborne defence of Britain during WW2. After falling into disrepair the airfield was restored by Dyson and is now being used to design one of their most unusual and exciting projects to date: the Dyson electric vehicle. We were given the exclusive tour of Dyson's most secret building.