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Proposed reforms to the National Planning Policy Framework and other planning system changes – December 2025

On Tuesday 16 December 2025, the Government published the consultation on proposed reforms to the National Planning Policy Framework (NPPF), alongside other planning system changes. This applies to England. The consultation ran until 10 March 2026.

For the third year running, December saw an updated NPPF. This one is a more radical re-write than the previous two – perhaps more so than many were expecting.

The Government also sought views on data centres and onsite energy generation, standardised inputs in viability assessments and reforming site thresholds.  

Alongside working closely with our clients to advise on the implications of the changes, we have examined what the proposals mean in practice for the industry and practitioners through a series of articles providing analysis and insight, available below. Some of our insights below also represent our submitted responses to the consultation. 

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