Census flow data involve flows of individuals in the UK between origins and destinations. These flows are either the residential migrations of individuals from one place of usual residence to another, or of commuters making journeys from home to workplace. These data are derived from the questions on the census form relating to usual place of residence one year ago, and the place of work for the respondent's main job. The Census Support Flow Data facilitates access to the interaction data for members of UK higher and further education institutions. Access is provided through the Web-based Interface to Census Interaction Data (WICID). Census Support Flow Data provides access to census data from 2001. The sets currently held include:Census migration datasets: 2001 Census: Special Migration Statistics (Levels 1, 2 and 3 plus Level 2 Scotland Postal Sectors); Migration data at District, Ward, Scottish Postal Sector and Output Area level.Census commuting datasets: 2001 Census: Special Workplace Statistics (Levels 1, 2 and 3); Commuting data at District, Ward and Output Area scales; 2001 Census: Special Travel Statistics (Level 1, 2 and 3 plus Level 2 Scotland Postal Sectors).