Flow data (formerly origin-destination statistics) will be available, comprising the travel-to-work and migration patterns of individuals on a day-to-day basis, cross-tabulated by variables of interest (for example occupation).
Statistical disclosure control indicates that all population estimates, including small estimates, will be permitted in principle. However, ONS has an obligation to protect individual attributes and may revise table designs if they are deemed disclosive on completion.
Some cross tabulations (for small geographies) will only be available under special agreement within a secure environment in ONS’s Virtual Microdata Laboratory (VML).
A workplace zone geography will be created, and population flows from output areas of residence to workplace zones are planned. Read more about workplace zones
The UK Statistical Disclosure Control working group agreed that the protection of the most detailed flow-data tables will come from the licensing/access conditions. This is a change from the 2001 Census, where the protection for similar outputs came from the post-tabular small cell adjustment which still allowed wide and easy access, but also adversely affected the utility of the outputs.
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