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Help protect our Green Belt: petition to change the ‘grey belt’ definition

16th October 2025

Our friends at CPRE Hertfordshire have launched a petition calling on the government to change the definition of the ‘grey belt’ in the National Planning Policy Framework. It’s gaining momentum, but we can do more.

The current definition of ‘grey belt’ is vague and risks opening up vital Green Belt land to unnecessary development. This threatens areas that play a crucial role in producing food, tackling climate change, restoring nature, and providing much-loved green spaces for local communities.

The petition by CPRE Hertfordshire has surpassed 10,000 signatures, meaning the government did respond. While they said there are no plans to change the definition, reaching 100,000 signatures could see the issue debated in Parliament; and the more signatures we get, the more powerful the message.

We’re calling on everyone who values the countryside and nature to add their voice and help strengthen the case for a clear and protective definition of ‘grey belt’.

Sign the petition

Fela Sanu / Getty Images

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