Guidance from the lighting experts of the Campaign for Dark Skies. Advice to save money, increase health and safety, and minimise light pollution
Jargon Buster
Bortle Scale – a standardised scale of light quality. Class 1 is no light pollution, 4.5 is the limit for a Dark Sky Reserve, most cities are class 6
Key Messages
The south-east is the most light polluted region in the UK