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From Parliamentary constituencies to council wards, Boundary-Line™ maps every administrative boundary in detail for you. And what's more, it's completely free to download and use.

Code-Point Open

Get started with geographical analysis, simple route planning and asset management.

GB Counties - Past and Present

Explore the county boundaries of Great Britain throughout time with our counties map.

OS Open Names

A comprehensive dataset containing the names and locations of named places across Great Britain​

OS Names API

With OS Names API, you’ll have access to a straightforward, rapid lookup service: drilling down into the details we hold in our OS Open Names dataset.