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Biodiversity net gain: nationally significant infrastructure projects

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Document information
ByDepartment for Environment, Food & Rural Affairslunar_lark_b6e668

Guidance about biodiversity net gain (BNG) for developers of nationally significant infrastructure projects (NSIPs).

Adapted edition

Transport safety
Document type
Reference Guide
Format
DOCX
Pages
23
Language
English
Version
1.0
Updated
2026-09-17
Category
Safety & operations
Licence
Open Government Licence v3.0
Description

Guidance about biodiversity net gain (BNG) for developers of nationally significant infrastructure projects (NSIPs). Consult the original guidance for current legal and operational details.

Contents
  • When BNG applies to NSIPs
  • Projects that cross England's borders
  • Follow the relevant biodiversity gain statement
  • The mitigation hierarchy
  • Check how BNG applies to irreplaceable habitat
  • Measure biodiversity value
  • BNG baseline
  • What habitats to include in your BNG baseline
  • Habitats negatively impacted by the development
  • Impacted habitats that can count as retained
  • Habitats used to contribute towards BNG
  • If your project design details are uncertain
  • If you have uncertainty on the extent of habitat impacts
  • If you have uncertainty on the location of habitat impacts
  • Scenarios: handling uncertainty about the location of impact
  • Scenario A: likely final route impacts habitats of high value
Source and licence
Biodiversity net gain: nationally significant infrastructure projects

Department for Environment, Food & Rural Affairs

Original source OGL-UK-3.0

AttributionDepartment for Environment, Food & Rural Affairs, ‘Biodiversity net gain: nationally significant infrastructure projects’ (updated 27 August 2026), reused under the Open Government Licence v3.0.

ChangesNeutral text-only adaptation from the official GOV.UK Content API body: headings, paragraphs, ordered and unordered list items and clickable source-link destinations in an appendix preserved. Images, logos, page design, accessible-format request widgets and linked attachments excluded; normalised whitespace, invisible format marks and typography.

Version history
  • v1.017/09/2026
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