Mentrau yn ôl ardal NUTS2, math o ddadansoddiad, diwydiant a band maint
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Econ0049: Size analysis of business sites by industry, Wales and Welsh NUTS2 areas
ETES3, Welsh Assembly Government
Diweddariad Nesaf: Nid yw’n cael ei ddiweddaru mwyach.Diweddariad Nesaf: Nid yw’n cael ei ddiweddaru mwyac
The data have been derived from a number of sources. The primary source is a detailed extract taken in March 2006 from the Inter-Departmental Business Register (IDBR) maintained by the Office for National Statistics (ONS). This gives details of all local units active in Wales, including employment estimates. It also includes identifiers for industry (using the 2003 Standard Industrial Classification or SIC2003), geographical location and legal status of each local unit, as well as a link to the owning enterprise and its own similar classifying variables, thus allowing the analysis given here.
The IDBR covers a very high proportion of the employment in the UK, but because it excludes most of the very large number of smallest businesses that operate below the VAT threshold, its coverage in terms of the number of local units is only partial (just over 50%). In order to correct for this, the figures presented here include estimates for unregistered local units together with their related employment. These estimates for unregistered local units are taken to be the same as the estimates of unregistered enterprises used in the headline analysis (based on the assumption that unregistered enterprises are single site enterprises and hence equivalent to unregistered local units). The estimates for unregistered enterprises are calculated using a combination of:
. IDBR data;
. information on persons who are self-employed in their main or second job, taken from the Labour Force Survey carried out by the ONS; and
. information on the numbers of sole traders and partnerships from the Survey of Personal Incomes data provided by the Inland Revenue.
A fuller description of the methodology used can be found at the end of the page found by clicking <a href=http://www.wales.gov.uk/keypubstatisticsforwalesheadline/content/economy/2004/hdw20040930-e.htm target=_blank>here.</a>
Note that area breakdowns of the data are workplace based. Each local unit and its related employment is allocated to a sub-area of Wales based solely on its physical location. The employment aggregates take no account of the area in which those employed in an enterprise reside.
As all enterprise counts and employment aggregates in this dataset have been independently rounded to the nearest 5, the figures may not add up exactly.
In order to avoid suppression of data due to disclosure control (which must occur for any aggregates based on less than 20 enterprises), some of the size bands have been presented in an aggregated form. These aggregated size bands have been chosen to limit the amount of aggregation whilst ensuring no data are suppressed.