CHD Look ups
The Code History Database includes information on all codes, relationships, hierarchies and archived data and is available in MS Access. ONS Geography are also able to provide simple lookups, in Excel format, which relate the old codes to new codes. The look up files that we consider to be most frequently requested are available for download. If you require look up files for other geographies these can be supplied free of charge on request. Please contact us for details.
Product details
Look up files, with accompanying metadata, are in MS Excel format.
Availability and Cost
Files are available to download free of charge.
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Administrative Geography
Look ups for old to new codes; administrative areas
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Health Geography
Look ups for old to new codes; health areas
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Electoral Geographies
Look ups for old to new codes; electoral areas
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Statistical Building Block Geography
Look ups for old to new codes; statistical building blocks
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Other Geography
Look ups for old to new codes; uncategorised areas
