Just occasionally you'll find yourself working either in or on the fringes of one of these constraint areas. And you need to know exactly where the boundary lies for many reasons. Likewise when it comes to printing no plan or drawing would be complete with something this important omitted.

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Portable Mapper have pulled together all the latest UK constraints for you in to one simple drag and drop file. And best of all they are free. Just visit our Download area to find them. No catch. No adverts. No popups.

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Some might say 'I can get all this information myself because it's freely available'. This is true but if you're busy then maybe you can't spare the time or don't have the expertise. Portable Mapper have done this for you so you don't have to.

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How reliable are these datasets ? All have either been downloaded from the national bodies that create the data or from the government's own data download site. Within your downloaded files you'll find a text file telling you the source and the date it was last updated.

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Are there any restrictions using this data ? All datasets are subject to the OGL (Open Government License) which allows you to adapt, use, copy and print as you wish without any cost or restrictions so long as we include the attribution; 'Contains public sector information licensed under the Open Government Licence v3.0 ' somewhere.

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Interrogating the data. These datasets show every individual constraint. Some may only be a few meters across, some may be thousands of meters. Each one has its own attributable data and that data can be viewed and interrogated using Portable Mapper's standard tools.