@Joker AFAIK there isn’t.
This is a small initiative by a local non-profit, with the additional benefit of bringing new people to start using OpenStreetMap (like a mapathon).
They explain the idea on the registration page: https://www.eventbrite.co.uk/e/towards-equal-street-names-with-open-data-registration-92536026747
If it proves to be succesful, they should definitely write some documentation to encourage other local communities to do the same.
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