Census ad hoc tables contain combinations of data that are not available in standard publications. They have been requested by the media or other user. Once created, ad hoc tables are published for all to use.
Ad hoc tables will be constrained by the data that are available at each stage, by the similarity to what ONS plans to release, and by statistical disclosure control.
Please note: 2011 Census ad hoc tables are now published in the ONS ad hoc data section where you can also find other additional statistical data and analyses by theme, that have not been included in ONS's standard publications.