Details of other issues that affected the quality of the 2001 Census data, including unprocessed forms and the impact of statistical disclosure control methods.
ONS carried out a series of studies designed to improve population estimates in the areas that proved hardest to count in the 2001 Census in England and Wales. ONS concluded that better estimates of the population could be made in 15 areas; Manchester and Westminster were the authorities with the largest changes with much smaller revisions to another 13 LAs.
Details of the effect of disclosure control on the origin-destination statistics
Estimation of people and households missed because of unprocessed forms
Report on the results of the Census Quality Survey conducted as part of the 2001 Census rehearsal