Contains travel flows from (and within) residential wards in Scotland to workplace wards in the UK. The set of wards used are as follows:

• Census Area Statistics ('CAS') wards in England and Wales
• Standard Table ('ST') wards in Scotland and Northern Ireland

ST and CAS wards are identical for the most part; however in a few cases small CAS wards have been merged with larger neighbours in order to satisfy output thresholds. No such merging was necessary for Northern Ireland, so there is no distinction between ST and CAS wards there.

The mixture of wards is unique to the 2001 interaction data, and the set have therefore been referred to as interaction data wards.

An alternative version of this dataset, showing flows between and within postal sectors (within Scotland only) is also available.

For residences outside Scotland, the 2001 Special Workplace Statistics (SWS) should be used. The STS and SWS are similar in some ways but have some crucial differences:

• The STS refer to all persons rather than just to employees and self-employed aged 16-74 as is the case with the SWS. These include:
  • Journeys made to schools and other places of education
  • A residual count of persons who neither work nor study
• The count of persons who neither work nor study is found in the intrazonal flow (i.e. where the residence (origin) and workplace (destination) wards are the same
• In order to make comparisons between the SWS and the STS, the final column relating to 'Other persons' in the STS must be removed from any totals calculated.

Data available

Users can choose from 535 counts in 6 tables. This set of 535 counts includes a number of totals and sub-totals; the number of interior cells which form the basis of these sub-totals is 280.

All the 2001 STS data have been derived from the 100% sample and include imputed households. Where workplace locations were unknown, these were also imputed.

Disclosure control

The data in this set were not subject to any post-tabulation disclosure control methods such as the Small Cell Adjustment Methodology used elsewhere in 2001 Census outputs.