National Map 100% open

What data is expected?

High level map at a scale of 1:250,000 or better (1cm = 2.5km)

What data is available

•   Does the data exist? Yes
•   Is data in digital form? Yes
•   Publicly available? Yes published by Ordnance Survey - there is one for UK and one for Northern Ireland)
•   Is the data available for free? Yes
•   Is the data available online? Yes (Here)
•   Is the data machine readable? Yes (TIFF)
•   Available in bulk? Yes
•   Openly licensed? Yes(Here)
•   Is the data provided on a timely and up to date basis? Yes

Details

The data is published by the Ordnance Survey (https://www.ordnancesurvey.co.uk/) for Great Britain and is open data: https://www.ordnancesurvey.co.uk/opendatadownload/products.html.

The Ordnance Survey's OpenData suite of digital products includes 1:250,000 scale raster mapping for all of Great Britain, and additional national mapping at higher resolution (OS StreetView and OS VectorMap District). These products are actively maintained. As Ordnance Survey is the national mapping agency for Great Britain only, the coverage excludes Northern Ireland, the Isle of Man and the Channel Islands.

The Ordnance Survey's OpenData product suite includes mapping with better than 1:250,000 resolution (OS Street View) and is released under the OS OpenData Licence, which complies with the Open Definition. The mapping is updated regularly (most recently in May 2012).

Northern Ireland

Separate data for Northern Ireland is provided by Ordnance Survey for Northern Ireland (OSNI) (http://www.nidirect.gov.uk/ordnance-survey-of-northern-ireland). Data for Northern Ireland is not yet available as open data (http://www.nidirect.gov.uk/index/information-and-services/property-and-housing/your-neighbourhood-roads-and-streets/ordnance-survey-of-northern-ireland/product-range/digital-products.htm).

OSNI sells it data (http://www.nidirect.gov.uk/index/information-and-services/property-and-housing/your-neighbourhood-roads-and-streets/ordnance-survey-of-northern-ireland/product-range/paper-products/price-lists.htm). And data is not available on bulk for the whole national territory as it is split between the two websites.

Open data mapping for Northern Ireland is not currently available at resolutions of 1:250,000 or better.