This collection comprises fieldwork and post-excavation data associated with Hornsea Offshore Wind Farm Project One. Archaeological work was undertaken by Wessex Archaeology between September 2015 and July 2019 and comprised seven set piece excavation areas, seven strip, map and record areas, twenty targeted watching brief areas and a general watching brief along the route of cable through North Lincolnshire, Northeast Lincolnshire, and Lincolnshire. A historic building recording of a WWII dispersed airfield site was also undertaken.