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HBF live briefing: Zack Simons KC on the CG Fry Supreme Court Judgment

27 November, 2025

Published: 1 Dec 2025

This live briefing explored the CG Fry Supreme Court ruling, which limits the ability of decision-makers to revisit matters already approved in principle at the outline stage. While the case focused on nutrient neutrality for sites protected under the Habitat Regulations, its implications reach far across planning and development decisions.

Zack Simons KC, who represented HBF and LPDF in the case alongside Matthew Henderson of Landmark Chambers, supporting CG Fry’s legal team, explained the judgment and its wider impact.

Chaired by James Stevens, our Director for Cities, the webinar provided members with practical insights into the ruling, what it means for developers and planning authorities, and lessons for future planning applications.

Key topics discussed included:

  • The Supreme Court ruling on nutrient neutrality and outline planning permission
  • How the judgment limits decision-makers’ ability to revisit approved matters
  • Practical implications for developers and planning authorities
  • Lessons for future planning applications and strategic decision-making

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