Commission for Dark Skies

The Commission for Dark Skies (CfDS) (formerly the Campaign for Dark Skies; the name was changed on March 29, 2015) is the United Kingdom's largest anti-light-pollution campaign group forming part of the international dark-sky movement. It is run by the British Astronomical Association (BAA) and affiliated with the International Dark-Sky Association (IDA), and composed of a network of local officers (and other members) who try to improve lighting in their areas and advise local people.

Source: Wikipedia — Commission for Dark Skies (CC BY-SA 4.0)