Limestone Pavement Orders and planning

 

A Limestone Pavement Order is one of planning and nature conservation’s less familiar statutory constraints. It protects exposed, naturally fissured limestone pavement from removal or disturbance under section 34 of the Wildlife and Countryside Act 1981.

The protection matters because limestone pavement is both a distinctive geological feature and a valuable wildlife habitat. Many protected pavements also sit inside Sites of Special Scientific Interest, and limestone pavement is also a priority habitat and one of the habitats treated as irreplaceable habitat for Biodiversity Net Gain.

There is also an important legal wrinkle: section 34 itself provides a “reasonable excuse” where the removal or disturbance was authorised by a planning permission granted on an application. That makes it essential to distinguish an express planning permission from simply assuming some other planning route, including permitted development, has the same effect.

 

What is limestone pavement?

 

Section 34 defines limestone pavement as an area of limestone lying wholly or partly exposed at the ground surface and fissured by natural erosion.

The characteristic surface is made up of limestone blocks, known as clints, separated by deep fissures or grykes. The grykes can support specialist plants and create sheltered microhabitats, while the whole pavement can have major geological and landscape importance.

Historically, limestone was removed from pavements for ornamental stone, gardens and water features. The 1981 Act created the Limestone Pavement Order system to give specifically identified areas additional statutory protection.

 

How is a Limestone Pavement Order made?

 

Under section 34, Natural England must notify the local planning authority of limestone pavement within its area. Where it appears that the character or appearance of notified land is likely to be adversely affected by removal or disturbance of the limestone, the Secretary of State or the relevant authority can make a Limestone Pavement Order.

The order designates the land and prohibits the removal or disturbance of limestone on or in it. Schedule 11 to the Wildlife and Countryside Act deals with the order-making, confirmation and commencement procedure.

This means limestone pavement as a habitat and land covered by an actual Limestone Pavement Order are related but not identical concepts. You need to check the mapped order, not simply whether limestone occurs on the site.

 

What is the offence?

 

Section 34 makes it an offence, without reasonable excuse, to remove or disturb limestone on or in land designated by a Limestone Pavement Order.

The offence can be prosecuted and is punishable by a fine. It is not merely a breach of planning policy or a matter to be balanced later in a planning application.

Anyone proposing excavation, access construction, drainage, foundations, utilities, quarrying, landscaping or other ground disturbance within an ordered area should therefore identify the statutory position before works start.

 

The planning-permission exception

 

This is the unusual part of section 34 and it is easy to state it too broadly.

Section 34(5) says it is a reasonable excuse for removing or disturbing the limestone where that removal or disturbance was authorised by a planning permission granted on an application under Part III of the Town and Country Planning Act 1990.

So an LPO is not an absolute statutory veto in every circumstance. If an express planning permission granted on an application authorises the particular disturbance, section 34 itself provides the reasonable excuse.

However, the wording is specific. It should not be read as saying that every form of planning permission or planning consent automatically has the same effect. In particular, permitted development rights normally operate through planning permission granted by the General Permitted Development Order rather than through an application for planning permission. If works rely on permitted development, a certificate, another consent route or an older permission with uncertain scope, do not assume section 34(5) protects the works without checking the legal position.

 

Does an LPO stop planning permission being granted?

 

The criminal-law exception does not make the environmental planning issues disappear.

Limestone pavement is an ecologically and geologically important habitat. A planning application proposing loss or deterioration may also engage:

• the August 2026 NPPF’s strong policy on irreplaceable habitats
• the statutory Biodiversity Net Gain rules for irreplaceable habitat
• Section 41 priority habitat considerations
• SSSI protection and Natural England consultation where the land is also within an SSSI
• local landscape, geodiversity and ecological policies

Planning permission therefore has to be assessed on its merits against these protections. Section 34(5) answers the specific criminal-offence question where its conditions are met; it is not a direction that an authority should approve harmful development.

 

Limestone pavement is irreplaceable habitat

 

Limestone pavement is on the statutory list of irreplaceable habitats for Biodiversity Net Gain.

That has two important consequences for relevant planning applications. First, national policy says development resulting in loss or deterioration of irreplaceable habitat should be refused unless there are wholly exceptional reasons and a suitable compensation strategy. Second, statutory BNG uses bespoke compensation rather than allowing the loss to be treated as an ordinary metric trade.

Statutory biodiversity credits cannot simply be purchased to compensate for the loss of limestone pavement.

 

Limestone pavement can also be an SSSI

 

Natural England notes that many limestone pavements are also designated as SSSIs. Where that is the case, the SSSI regime applies separately.

An LPO boundary and an SSSI boundary should never be assumed to be identical. Check both datasets and the reasons for notification. Our SSSI planning guide explains the separate consultation and protection framework.

 

How do you check for a Limestone Pavement Order?

 

Natural England publishes a national spatial dataset showing Limestone Pavement Orders in England, and the data can be used through national environmental mapping services. The local planning authority should also hold the order and mapping for land in its area.

For a live proposal, check:

• the actual LPO boundary and order documents
• whether the works would remove or disturb limestone within that boundary
• whether an SSSI or other nature designation overlaps
• whether the habitat is captured by statutory BNG as irreplaceable habitat
• the exact planning route authorising the works
• whether the approved plans and permission genuinely authorise the particular limestone disturbance

 

Practical advice for a development site

 

1. Do not rely on a basic planning constraints search alone if the site is in limestone country
2. Obtain the LPO map and order and compare them with the red line and construction footprint
3. Commission suitable ecological and geological evidence before designing foundations, roads or drainage
4. Avoid the pavement wherever possible because planning policy and BNG treatment are exceptionally strong
5. Check the precise planning permission before relying on section 34(5)
6. Check overlapping SSSI and habitat controls separately

 

Key sources

 

• Wildlife and Countryside Act 1981, section 34
• Natural England: Limestone Pavement Orders spatial dataset
• Defra: Irreplaceable habitats guidance

Conservation, Heritage & Protected Sites

 

Limestone Pavement Orders Page Added: 28th August 2026