A set of new Output Area to ward lookup files was released on 18 November 2004. These files supplement the Output Area to higher areas lookup files, released in March 2003 and available on CD from Census Customer Services, which provide the 'best-fit' of Output Areas to a wide range of geographies current at the end of 2002.
The main files provide the best-fit of Output Areas to 2004 wards (that is, those wards which have undergone a boundary change through a Statutory Instrument made in 2003) and to 1991 wards. Additional files provide more accurate Output Area constitutions of a small number of unchanged 2003 wards in Milton Keynes, Pembrokeshire, Monmouthshire, Lancaster, North Norfolk and South Norfolk where the original constitutions were not based on the final correct ward boundaries.
These lookup files can be supplied, free of charge, in text (.txt) or Excel (.xls) format on CD from Census Customer Services.
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