Flow Data Information System
Table C0711 was created as commissioned output from the 2001 Census. For ease of use it has been split into three parts:
C0711B contains details of flows of migrants from outside the UK to local authorities in England and Wales. Around 45 distinct countries are recognised as origins, with other countries being merged into larger regional groups.
The output tables include 'all migrants' and 'all persons'; these are identical. They are the sum of all migrants from outside the UK, but do not include migrants with no usual address one year prior to the Census.
As noted in the commissioned output originally supplied to CIDER, a coding error caused 3191 migrants in England and Wales to be identified as 'migrants from outside the UK' even though they had migrated within the UK. Nationally, this inflates the count of migrants from outside the UK by less that 1%. The migrants are included in this data set with a 'foreign' origin of 'United Kingdom'.
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
Users are advised to ensure that data they use has been calculated by summing the minimum number of base values.
Users are advised that as an additional disclosure control mechanism, flows to the City of London have been merged into counts for flows to Westminster, and similarly flows to the Isles of Scilly have been merged into those for Penwith district.
The following statements should be attached to all output produced using this data set
© Source: The 2001 Census, Crown Copyright
Data from this set should be cited in a bibliography as:
Office for National Statistics, 2001 Commissioned table C0711B: Migrants from outside UK by ethnic group [computer file], UK Data Service
The following pre-defined totals are available from this data set:
There are 1 tables defined for this data set:
The data are available for the following geographies:
|Geographies of origin areas||Geographies of destination areas|
|2001 C0711 - Foreign origins||2001 UK districts (including NI districts)|
|Supported via aggregation|
|UK Government Office Regions (1999-)|
2001 UK Local Authority Classification
2001 ONS LAD Classification - Supergroup
2001 ONS LAD Classification - Group
2001 ONS LAD Classification - Subgroup
2001 Vickers LAD Classification - Family
2001 Vickers LAD Classification - Group
2001 Vickers LAD Classification - Class
2001 Vickers LAD Classification (Eng & Wales) - Family
2001 Vickers LAD Classification (Eng & Wales) - Group
2001 Vickers LAD Classification (Eng & Wales) - Class
NUTS 2 UK Regions
UK North and South Geography
2001 CIDER Migration Classification
2001 GB Districts plus Northern Ireland
Output for geographies that are only supported via aggregation will take longer than for those supported directly
|Total||White||Indian||Pakistani and other South Asian||Chinese||Caribbean, African, Black British and other Black||Mixed||Other|