[Talk-GB] OS National Grid References

Richard Fairhurst richard at systemed.net
Tue Jan 22 17:14:13 UTC 2019

Brian Prangle wrote:
> Are these covered by copyright?

The National Grid per se is not covered by copyright.

The newer transformations used to produce highly accurate grid references
may be, but in fact OS has licensed  the most recent (OSTN15) under the
permissive BSD licence:



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