This instant download contains circa. 1,791,296 postcodes & Travel to Work Areas/Zones (TTWA). TTWA boundaries are non-overlapping and cover the whole of the UK. TTWAs have been assigned to regions based on where the highest proportion of land area for the TTWA falls. TTWAs can also cross national boundaries, although no account is taken of commuting between Northern Ireland and the Republic of Ireland. Postcodes within the file are updated quarterly to ensure they remain current, and our clients receive an inclusive complete refresh every three months as part of the service, for no additional fee.
TTWAs are used in labour market analysis and reflect reasonably self-contained zones in which the bulk of the resident population also work. The 228 current TTWAs were defined in 2015 using 2011 Census information on home and work addresses and are built from 2011 Census LSOAs in England and Wales, data zones in Scotland, and SOAs in Northern Ireland. The previous (2007) areas were based on the same statistical geographies from the 2001 Census.
The current criteria for defining TTWAs are that at least 75% of the area’s resident workforce work in the area and at least 75% of the people who work in the area also live in the area. The area must also have an economically active population of at least 3,500. However, for areas with a working population in excess of 25,000, self-containment rates as low as 66.7% are accepted as part of a limited “trade–off” between workforce size and level of self-containment. The resulting pattern is that many areas are much larger than others – indeed, much of London and its surrounding area forms one TTWA.
This product consists of three Comma Separated Variable (CVS) text files with a header record and will open in any common application including MS ACCESS and MS EXCEL. You will initially receive one ZIP compressed file that when unpacked will reveal three files: (1) PCL-TTW-UK-CSV-1 contains all live Postcodes from Postcode Areas AB to LN (901,222 postcodes); (2) PCL-TTW-UK-CSV-2 contains all live Postcodes from Postcode Areas LS to ZE (890.074 postcodes); (3) PCL-TTW-UK-CSV-Retired contains all Retired Postcodes.
Fields presented in the files:
The 228 current TTWAs were defined in 2015 using 2011 Census information on home and work addresses and are built from 2011 Census LSOAs in England and Wales, data zones in Scotland, and SOAs in Northern Ireland.
Downloads are supplied as licensed products, allowing unlimited reuse of the file content for 12 months. You may cancel the licence at any time without penalty. The licence fee you pay covers the considerable effort taken to compile and update the product, including our manual correction and verification, and finally verification against the latest Royal Mail and Ordnance Survey databases. On or before the 11th month, we will write to you, offering to extend the licence for a further 12 months or to let it expire.
As part of the fee paid, we will automatically send you a full product file refresher every 3 months for no additional fee. This will ensure the postcodes and associated content remains current.
We have developed internal quality processes to help ensure the data you purchase is fit for purpose. If you are for some reason not satisfied with the data or our work, we offer a no quibble refund in exchange for your feedback.
£195.00 – £520.00 / year
Instant Download: A link to the data, is emailed upon payment. We will also email a link to the updated version of this file every three months (included in the fee you pay).
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