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Biodiversity Net Gain: Good Practice Principles for Development, A Practical Guide.

Biodiversity is vital to sustain the UK’s society and economy. Improving biodiversity is integral to sustainable development, and biodiversity net gain (BNG) is an approach to embed and demonstrate this.

This guide offers practical advice to achieve BNG in the UK’s land and freshwater environment. It is based on the UK’s good practice principles for BNG and applies to all types and scales of development, at all stages in the life cycle of development. It is relevant to developers and all other stakeholders wishing to promote, facilitate and deliver BNG.

Clarifications and errata

Date Location Description
21 Feb 2019

Biodiversity Net Gain: Good practice principles for development Gain – Case studies (2019)-C776b

Page 130, Technical Note T3 Irreplaceable habitats


For England, Section 175(c) of MHCLG (2018) states that: “Development resulting in the loss or deterioration of irreplaceable habitats (such as ancient woodland and ancient or veteran trees) should be refused, unless there are wholly exceptional reasons and a suitable compensation strategy exists

The above text should replace the existing text which is a quotation from the earlier 2012 version of MHCLG

10 Aug 2020

Biodiversity Net Gain: Good practice principles for development- C776a

Page 84, Chapter 11 Designing biodiversity net gain

The reference to Box 11.9 should refer to Box 11.7 on page 102.

This document has been developed collaboratively by CIEEM, IEMA and CIRIA.