Census flow data (also known as interaction data) are data that relate to flows of people between places. Whereas most census data relate to counts of people at single locations, flow data describe interactions between two locations - origins and destinations.
The most common flow data relate to migration and commuting flows, although data from the latest 2011 Census will also include information on movements between main and second addresses.
Currently migration and commuting data from the 1981, 1991 and 2001 Censuses are available through WICID, as well as some annual migration data derived from NHS patient registers. Data from the 2011 Census will be available in late 2013.
Access Census flow data
These data are restricted to staff and students from UK further/higher education institutions.
WICID is a flexible interface providing access to flow data. These data contain
counts which are linked to an origin and destination, such as migration or
The CIDER site - provides further information