Flow Data Information System

2001 Commissioned Table: C0649 Commuters by religion

Contains commuting flows within and between ‘districts’ in England and Wales. The set of districts are as follows:

The combination of areas is unique to the 2001 interaction data, and the set have therefore been referred to as interaction data districts.

The 2001 commissioned data have been derived from the 100% sample and include imputed households. Where migrant origins were unknown, these were also imputed.

Disclosure control

Data associated with destinations in England, Wales and Northern Ireland have been modified via a process known as Small Cell Adjustment Methodology (SCAM). The SCAM process is a disclosure control mechanism. For all tables process using SCAM, interior cells with a 'small' value have been adjusted. 'Small' values are understood to be in the range 0-3. Cells with an initial value of 1 have been rounded to either 0 or 3, with 0 being the more likely result. Cells with an initial value of 3 have also been rounded to either 0 or 3, but with 3 being the more likely result. Cells with initial values of either 0 or 3 have retained these values although in each case it is impossible to distinguish between rounded values and 'genuine' 0s or 3s. All sub-totals and totals have been re-calculated from the rounded cells.

There are three noticeable effects of SCAM

  1. Within-table modification. For the majority of outputs, it will be apparent that a large proportion of cells within any table are either 0 or 3, and that sub-totals and totals within the table are multiples of 3.
  2. Between-table variation. SMS Levels 1 and 2 contain several output tables, with the result that a number of values (e.g. 'total migrants') can be found in more than one table (including the commissioned tables). Due to SCAM, these values may not be consistent between tables.
  3. Between-level variation. The three spatial levels for which the SMS are available were independently subject to SCAM. Thus, if a particular value (e.g. 'total migrants') is calculated by aggregating from one spatial level to a higher one, and compared to the value found in the SMS data set for that higher level, those values are unlikely to be consistent. This also applies to data at different spatial levels for the commissioned tables.

Users are advised to ensure that data they use has been calculated by summing the minimum number of base values.

Citation information

The following statements should be attached to all output produced using this data set

Data from this set should be cited in a bibliography as:

Office for National Statistics, 2001 Commissioned Table: C0649 Commuters by religion [computer file], UK Data Service

Further information

There are 1 tables defined for this data set:

The data are available for the following geographies:

Geographies of origin areasGeographies of destination areas
Supported directly
[i]UK interaction data districts 2001
[i]2001 C0649 - Residence total
[i]2001 STS / SWS other destination categories
[i]UK interaction data districts 2001
[i]United Kingdom - member countries
[i]2001 C0649 - Workplace total
Supported via aggregation
[i]UK Government Office Regions (1999-)
[i]CIDS 1991/2001 common geography - 'districts'
[i]CIDS 1991/2001 common geography - 'intermediate'
[i]CIDS 1991/2001 common geography - '100 zones'
[i]CIDS 1991/2001 common geography - 'city regions'
[i]United Kingdom - member countries
[i]Great Britain and Northern Ireland
[i]NUTS 2 UK Regions
[i]United Kingdom
[i]2001 CIDER Migration Classification
[i]2001 GB Districts plus Northern Ireland
[i]Great Britain Districts (plus Northern Ireland) 2009-
[i]UK Government Office Regions (1999-)
[i]CIDS 1991/2001 common geography - 'districts'
[i]CIDS 1991/2001 common geography - 'intermediate'
[i]CIDS 1991/2001 common geography - '100 zones'
[i]CIDS 1991/2001 common geography - 'city regions'
[i]Great Britain and Northern Ireland
[i]NUTS 2 UK Regions
[i]United Kingdom
[i]2001 CIDER Migration Classification
[i]2001 GB Districts plus Northern Ireland
[i]Great Britain Districts (plus Northern Ireland) 2009-

Output for geographies that are only supported via aggregation will take longer than for those supported directly

Table frameworks


Table 1: Commuters by religion
Total No religion Christian Buddhist Hindu Muslim Sikh Jewish Other religion Not stated
All persons 1 2 3 4 5 6 7 8 9 10