Census Data Support Unit: Census Flow Data Census Data Support Unit: Census Flow Data Access information: Available on and off-campus from WICID (the Web-based Interface to Census Interaction Data). Choose Login via UK Federation. Registration is required. Follow the registration link for details. Description: Census flow data (also known as interaction data) relate to flows of people between places, both origins and destinations. Coverage: Migration and commuting data from the 1981, 1991, 2001 and 2011census data. Additional Information For more information and advice on online Census material is available from the Research Data Service. This article was published on 2024-08-21