Nature Reserves and Planning: NNRs and LNRs

 

A nature reserve can mean several different things in everyday conversation, but two formal categories are particularly relevant to planning in England: National Nature Reserves (NNRs) and Local Nature Reserves (LNRs).

They should not be treated as interchangeable. NNRs protect and manage some of England’s most important places for wildlife, habitats and geology. LNRs are declared locally for nature conservation and public benefit. Their planning effect also differs, particularly under the August 2026 National Planning Policy Framework.

Natural England currently lists 224 National Nature Reserves in England, covering more than 116,000 hectares.

 

What is a National Nature Reserve?

 

National Nature Reserves were established to protect some of England’s most important habitats, species and geological features and to provide places for conservation research, education and public engagement.

Natural England manages around two thirds of the NNR network. Other reserves are managed by approved bodies such as conservation charities, public bodies, local authorities and landowners.

Natural England continues to declare and extend NNRs. They are not simply historic designations: the network remains an active part of national nature recovery policy.

 

What is a Local Nature Reserve?

 

A Local Nature Reserve is land declared and managed as a nature reserve by a principal local authority under section 21 of the National Parks and Access to the Countryside Act 1949. Town and parish councils can also declare an LNR where the necessary powers have been delegated.

The declaring authority must control the land through ownership, lease or agreement. LNRs can be important for wildlife, geology, education and public enjoyment. They should normally be accessible to the public where access is compatible with protecting the reserve’s natural features.

An LNR is therefore more than a park which happens to have trees and wildlife. It is a formal nature-reserve declaration with management responsibilities.

 

How does NPPF 2026 treat Local Nature Reserves?

 

The August 2026 NPPF is unusually clear. Policy N6 treats a Local Nature Reserve as a site of local importance, alongside a Local Wildlife Site, Local Geological Site or equivalent in the development plan.

A proposal affecting such a site should only be supported if either there would not be a significant adverse effect on the integrity of the site, or the benefits of development in the proposed location clearly outweigh the likely impact on the features which make the site valuable for nature conservation.

N6 also applies to development outside the boundary where the proposal would affect the identified biodiversity or geodiversity value of the reserve.

 

How does planning treat National Nature Reserves?

 

NNRs need a little more care. The NPPF’s N6 category of a site of national importance is defined for that policy as a Site of Special Scientific Interest. It does not simply say that every NNR is automatically to be treated as a separate N6 national-site category.

In practice, most NNRs are also underpinned by SSSI designation, and many overlap Special Areas of Conservation, Special Protection Areas or other protected sites. Those overlapping designations can bring their own statutory duties and much stronger planning tests.

The correct approach is therefore to identify all the designations affecting the reserve rather than assume that the letters “NNR” tell you the whole legal position.

 

NNR and SSSI are not the same thing

 

An NNR is managed as a nationally important nature reserve. An SSSI is a statutory notification protecting features of special scientific interest. The boundaries can overlap closely, but the concepts and legal mechanisms are different.

For a planning application near an NNR, check the NNR boundary and the SSSI boundary separately. Also check for SAC, SPA and Ramsar interests where relevant. If a habitats site could be affected, the separate Habitats Regulations Assessment process may apply.

 

Development near a nature reserve

 

A development does not have to sit inside the reserve to cause planning harm. Effects can travel across the boundary.

Depending on the reserve and proposal, relevant impacts can include:

• loss or fragmentation of habitat
• changes to water levels, drainage or water quality
• lighting and disturbance
• air pollution and nitrogen deposition
• noise and construction activity
• increased recreational pressure
• predation or disturbance associated with domestic pets
• changes to access, paths or reserve management

Large housing, tourism, infrastructure, agricultural and industrial proposals can all raise different pathways. The assessment should follow the actual ecological relationship, not an invented generic buffer.

 

Does public access reduce ecological protection?

 

No. Many nature reserves actively encourage people to visit, learn and enjoy wildlife. That does not mean additional recreational pressure is automatically harmless.

A reserve can have zones which are robust enough for public access and other features which are highly sensitive to disturbance. Development may therefore need to consider visitor numbers, access routes, dog walking, parking, seasonal effects and whether mitigation is genuinely capable of protecting the reserve.

 

What should an applicant check?

 

• confirm whether the reserve is an NNR, LNR or simply a reserve managed by another organisation
• check the exact reserve boundary
• identify overlapping SSSI, SAC, SPA, Ramsar or Local Site designations
• read the reserve citation, declaration and management information where available
• identify direct and indirect impact pathways
• obtain ecological surveys early enough for the relevant survey season
• consider construction effects as well as the completed development
• design mitigation around the reserve’s actual protected and managed features

Our ecological survey calendar is a useful starting point for survey timing, and our protected species guide covers the separate species issues which may arise.

 

Official guidance and maps

 

Natural England – National Nature Reserves in England

Natural England – Local nature reserves: setting up and management

Natural England – Protected sites and planning applications

Conservation, Heritage & Protected Sites

 

Nature Reserves Page Created: 27th August 2026