Biodiversity Net Gain Consultants in Cumbria

Biodiversity advice for a county of contrasting landscapes

Cumbria contains coastal lowlands, lakes, wooded valleys, farmland, upland grassland and extensive areas of peatland. Those contrasts make a landscape-led approach to biodiversity net gain essential. A habitat proposal that is sensible on one holding may be inappropriate on another, even where the sites are not far apart. Existing ecological value and designations can be more important than the apparent availability of land.

Collington Winter Environmental works throughout England from our Bolton office and supports development and landowner projects in Cumbria. We provide survey-led BNG assessment, statutory metric calculations and management advice. Our role is to help identify a credible route through the planning and delivery process, while being clear where protected sites, irreplaceable habitats or practical land management constraints limit the options.

Current Cumbrian councils and national park planning

Cumberland Council and Westmorland and Furness Council are the two unitary councils covering Cumbria. They replaced the former county and district council structure in 2023. For ordinary applications outside national parks, these are the principal councils to consider rather than relying on old district planning names. The Lake District National Park Authority and Yorkshire Dales National Park Authority exercise planning functions within their respective park boundaries.

We confirm the authority using the site boundary and review the applicable local policy and validation requirements. National park status, landscape designations, protected sites and flood-risk considerations may all influence a proposal alongside BNG. The statutory percentage is not a permission to lose sensitive habitat, and an ecological gain calculation cannot substitute for the separate assessments needed to establish whether the development itself is acceptable.

From Solway and Morecambe Bay to upland catchments

Cumbria's coastal habitats around the Solway and Morecambe Bay contrast with the Lake District fells, Eden valley farmland and upland peatlands. Rivers, lakes, wet grasslands, hedgerows and semi-natural woodland create varied ecological networks. On a working farm, the baseline may change markedly between intensively managed fields, older boundaries and less improved corners, so a single broad description can be misleading.

Protected-species considerations may include bats, badgers, otters, nesting birds and great crested newts in suitable settings. Water voles and red squirrels can also be relevant where habitats and records indicate potential. Upland or coastal proposals may raise particular bird issues. These are potential survey topics, not claims of presence at every Cumbrian site. Evidence should reflect the specific habitat, proposed works and survey season.

How statutory biodiversity net gain applies

For development in Cumbria that falls within England's statutory BNG regime, the national requirement is at least 10% biodiversity net gain measured using the statutory biodiversity metric. Applicability, commencement and any exemption should be checked for the particular application against current legislation and guidance. Local policy may introduce additional expectations; the national minimum should not be assumed to settle every planning requirement. An exemption from statutory BNG does not remove protected-species or designated-site duties.

The assessment starts with a defensible pre-development baseline. Habitat type, area or length, condition and strategic significance feed into the calculation, alongside the proposed retention, enhancement and creation. Habitat area units, hedgerow units and watercourse units are assessed separately and cannot simply be exchanged for one another. Trading rules also govern which habitats can address particular losses. The metric accounts for delivery risks, including the time habitats take to develop and the difficulty of establishing them. 3

Avoiding and minimising harm should inform the design before residual requirements are addressed. The applicable biodiversity gain hierarchy guides consideration of on-site habitat delivery, off-site units and, as a last resort, government statutory biodiversity credits. Any application-specific modifications to that hierarchy should be checked against current guidance. Private off-site units and government credits are different products, with different procedures and evidence requirements; purchasing either without checking the actual deficit can create avoidable cost.

Off-site delivery can take place on the developer's other land or through a third-party provider. The statutory spatial risk multiplier influences how much off-site delivery is needed. For area habitats and hedgerows, relevant local planning authority and National Character Area relationships matter; watercourses use their applicable catchment geography. We check the current metric rules for the proposal rather than assuming that a county boundary, mileage radius or LNRS boundary determines the answer.

A biodiversity gain plan normally requires approval by the planning authority before development can commence under the statutory biodiversity gain condition. Planning-stage baseline information and an outline gain strategy are therefore important, but they are not automatically the approved final plan. The plan must reconcile the permitted layout, completed metric and the legal evidence for any off-site allocation or statutory credits. Phased schemes have additional plan requirements that should be considered from the outset.

Significant on-site habitat enhancements and registered off-site gains must be secured and managed for at least 30 years under the applicable rules. Off-site land needs an appropriate legal agreement, such as a section 106 obligation or conservation covenant, registration on the biodiversity gain sites register and allocation to the development. A habitat management and monitoring plan should identify responsibilities, target conditions, management actions, reporting and remedial measures. The required management period and its start point should be made explicit in the agreement rather than treated as an informal promise.

Credible management in a working rural landscape

A Cumbrian BNG strategy should take agricultural management seriously. Grazing intensity, livestock access, fencing, winter conditions and the ability to remove cut material can determine whether a grassland target is realistic. Wetland creation needs a sound understanding of water sources and drainage. Tree planting must be appropriate to the habitat and should not be treated as a universal improvement over existing open ground.

We look at the existing ecological network before proposing interventions. Retaining a species-rich area or protecting a river margin may avoid harm that would be difficult to compensate. In upland settings, peatland and other sensitive habitats demand particular caution; some fall within the statutory irreplaceable habitat framework. Such habitats cannot simply be traded through the standard metric as if all losses were interchangeable.

The Cumbria LNRS and local delivery opportunities

Westmorland and Furness Council is the responsible authority for the Cumbria Local Nature Recovery Strategy, working across the strategy area with relevant partners. Its role in leading the LNRS does not make it the planning authority for every Cumbrian site. The strategy provides a shared framework, while planning jurisdiction and individual habitat delivery arrangements remain site-specific. 1

We review the applicable strategy measures and mapping when considering habitat creation or enhancement and any strategic significance score. A county-wide priority does not mean every intervention is suitable everywhere. For off-site units, the separate statutory spatial assessment must also be applied. Large distances and multiple landscape types within Cumbria make it especially unwise to assume that a shared county description establishes the appropriate multiplier.

Habitat banking with realistic agricultural economics

Habitat banking can be worth investigating for Cumbrian landowners, but it requires more than identifying a field with a low apparent biodiversity value. Existing stewardship agreements, designated-site duties, tenancies, access rights and long-term farm plans all affect feasibility. The unit forecast must reflect additional, deliverable habitat improvement rather than counting commitments that already exist.

We can assess baseline habitats, model suitable options and prepare a management framework. A business case should include establishment, fencing, grazing or cutting, monitoring, legal costs and corrective work, as well as the possibility that unit sales are delayed. Legal and financial advisers should review the proposed structure before land is committed. Owners need to understand the duration and enforceability of their obligations, not just the potential headline value of a unit calculation.

Working with Collington Winter Environmental

Our services for Cumbria can begin with an initial ecological review or a preliminary ecological appraisal, followed by habitat mapping and condition assessment where needed. We can prepare statutory biodiversity metric calculations, compare design options, identify an off-site deficit and support biodiversity gain plan preparation. Where protected-species issues arise, we advise on survey needs, mitigation and any licensing route rather than treating the metric as a substitute for species assessment.

Collington Winter Environmental is led by Managing Director Olivia Collington, a Chartered Environmentalist with Natural England bat and great crested newt licences and experience using DEFRA's Statutory Biodiversity Metric. Licence scope and any project-specific authorisation still need to be checked before licensed work is undertaken. Professional credentials support competent assessment; they do not guarantee permission, a licence or a particular biodiversity outcome.

We can also develop habitat management and monitoring plans and help landowners assess the ecological feasibility of habitat banking. The scope should be agreed around the site, programme and available evidence. Legal agreements, conveyancing and specialist financial advice remain matters for appropriately qualified advisers, with ecological input coordinated where required.

To discuss a development or landholding in Cumbria, contact Collington Winter Environmental on 01204 939 608. A site plan, planning reference if available, proposed layout and target programme help us identify the next useful step. Contacting us before clearing vegetation or finalising the design allows more options to be considered and reduces the risk of making decisions without an adequate ecological baseline.