Internal migration data available from a variety of sources disaggregated by numerous variables (especially when census data are used). Largest influence on population change in the UK.

Internal migration data available from a variety of sources disaggregated by numerous variables (especially when census data are used). Largest influence on population change in the UK.
International migration data available from fewer sources, although census data are directly comparable with internal migration census data. Evidence for linkage with internal migration (Stillwell and Duke-Williams, 2005).
Commuting data are similarly available from census and non-census sources. Phenomenon closely related to migration – especially where longer distance, longer stay commutes are concerned.

International migration data available from fewer sources, although census data are directly comparable with internal migration census data. Evidence for linkage with internal migration (Stillwell and Duke-Williams, 2005).