Buffering Britain Mapping Britain’s Mobile Network
Regions
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MAP GUIDEBritain key

This tab uses reports sent to Buffering Britain from ordinary users like you.

MAP COLOURS

Often unusableBlackspots make up 50% or more, or problem reports make up 80% or more
Frequently strugglingBlackspots make up 25% or more, or problem reports make up 50% or more
Mixed performanceThe area has a blackspot, or problem reports make up 20% or more
Mostly workingNo blackspots and fewer than 20% problem reports
More reports neededFewer than 10 located reports. More data needed.
Major rail linesOptional reference layer

BLACKSPOTS

What’s a Blackspot?

A Blackspot means the download test could not complete. The “All Blackspots” filter shows every published area with at least one Blackspot report.

PRIVACY

Our map keeps individual test locations private.

Each local dot covers an approximate 110-metre area and appears after at least three reports have been combined.
Included reports

REGION COMPARISON

Compare regions

    BRITAIN KEY

    How the map works

    This map uses reports sent to Buffering Britain from ordinary users like you.

    What’s a Blackspot?

    A Blackspot means the download test could not complete. A completed result below 1.5 Mbps is Mostly unusable. The “All Blackspots” filter shows every published area with at least one Blackspot report.

    How areas are shaded

    Problem reports include Blackspots, completed downloads below 1.5 Mbps and completed downloads below 10 Mbps. Areas with fewer than 10 located reports use grey shading because more data is needed.

    Locations stay private

    Each local dot covers an approximate 110-metre area and appears after at least three reports have been combined.

    Upload, latency and rail

    Slow upload means below 1 Mbps. High latency means above 150 ms. Major rail lines are an optional reference layer.

    Read the app privacy policy