Portsmouth LPA BNG
Expert support for Biodiversity Net Gain in Portsmouth LPA. BNG assessments, habitat mapping & access to local BNG units.
.jpg)
Trusted by Developers and Landowners
Biodiversity Net Gain in Portsmouth LPA Local Planning Authority
.jpg)
West Berkshire, located in South East England, is a predominantly rural Local Planning Authority (LPA) known for its diverse natural environment and rich ecological heritage. Covering an area of approximately 704 square kilometres, the district includes a range of urban centres and rural settlements, with Newbury serving as the principal town. Other significant towns and villages within the LPA include Thatcham, Hungerford, Pangbourne, and Theale, each contributing to the area's distinctive landscape character and biodiversity value.
As part of its commitment to sustainable development, West Berkshire Council actively supports the implementation of Biodiversity Net Gain (BNG) in line with the Environment Act 2021. Developers working within the LPA are required to deliver a minimum 10% net gain in biodiversity value for most developments, secured through habitat creation, enhancement, or approved off-site units.
West Berkshire encompasses several National Character Areas (NCAs), notably the North Wessex Downs and Thames Basin Heaths, each influencing the typical habitat types found in the region. These include ancient woodlands, chalk grasslands, river valleys, lowland mixed deciduous woodlands, and floodplain meadows—many of which are priority habitats under the UK Biodiversity Action Plan. This ecological diversity presents both opportunities and constraints for BNG delivery, requiring careful ecological assessment and strategic planning.
For developers, landowners, and planners operating within West Berkshire, understanding the LPA’s landscape, habitat distribution, and regional policy context is critical to meeting BNG obligations. Our team provides tailored support through BNG assessments, habitat mapping, and access to verified local BNG units and schemes.
To learn more about BNG opportunities in this area, contact us or register to be notified when local schemes become available.
Portsmouth, a historic naval city located on the south coast of England, is a unitary authority known for its dense urban environment bordered by extensive coastal and marine habitats. Covering approximately 40 square kilometres, Portsmouth is largely urban but surrounded by significant natural features including harbours, mudflats, saltmarshes, and shingle beaches.
In line with the Environment Act 2021, Portsmouth City Council requires most development proposals to achieve a minimum of 10% Biodiversity Net Gain (BNG). This may be delivered through on-site habitat creation or enhancement, off-site biodiversity units, or contributions to strategic coastal and urban nature networks.
The Portsmouth LPA overlaps parts of the South Coast Plain National Character Area and coastal zones important for intertidal wildlife. Habitats include coastal saltmarsh, intertidal mudflats, shingle banks, and pockets of urban green space such as parks and allotments that provide refuges for wildlife.
Portsmouth’s urban coastal setting poses both constraints and opportunities for BNG. Enhancing existing green spaces, creating green roofs and walls, and restoring coastal habitats can contribute significantly to biodiversity uplift in this highly built-up area.
For developers, landowners, and planning professionals working in Portsmouth, understanding local habitat types, marine influences, and planning policy is vital. Our team offers detailed BNG assessments, habitat mapping, and practical guidance for maximizing biodiversity benefits.
To learn more or receive updates about BNG units and schemes in the area, get in touch with us.
Habitats in Portsmouth LPA Local Planning Authority
.jpg)
West Berkshire’s landscape is shaped predominantly by the North Wessex Downs National Character Area (NCA 116), a chalk downland landscape of international ecological importance, and partly by the Thames Basin Heaths (NCA 129). These NCAs support a rich mosaic of habitats, many of which are priority habitats under BNG classifications and the UK Biodiversity Action Plan.
Grassland Habitats
Lowland calcareous grassland dominates the chalk ridge areas, supporting diverse plant species like orchids and wild thyme.
Lowland meadows are scattered along the Kennet Valley and floodplain, offering high biodiversity value, particularly for invertebrates and ground-nesting birds.
Areas of modified grassland are common in improved pastures and paddocks, but these hold lower BNG value unless enhanced.
In some acidic soils, lowland dry acid grassland and other lowland acid grassland can be found, especially on sandy substrates and heathland edges.
Woodland and Forest Habitats
The LPA contains extensive lowland mixed deciduous woodland, particularly on the clay-with-flints plateau and valley slopes, providing habitat for bats, dormice, and woodland birds.
Veteran trees and old estates feature wood-pasture and parkland, a rare and highly valued BNG habitat.
Areas of wet woodland, often associated with river valleys, add to the ecological complexity.
Heathland and Shrub
On the fringes of the Thames Basin Heaths, lowland heathland and mixed scrub are present, though often fragmented, supporting heathland birds like nightjar and Dartford warbler.
Wetland and Watercourse Habitats
The River Kennet, a designated Site of Special Scientific Interest (SSSI), provides priority river habitats and supports adjacent floodplain wetland mosaics.
Smaller ponds, reedbeds, and ditches are scattered across the landscape, particularly in floodplain areas.
Cropland Habitats
Much of West Berkshire’s agricultural land is under cereal crops or temporary grass and clover leys, but there is increasing scope to integrate arable field margins for biodiversity gain.
Hedgerows and Linear Features
The rural landscape is strongly characterised by native species-rich hedgerows, often associated with ditches and banks, which function as critical wildlife corridors under BNG classification.
Despite its urban nature, Portsmouth supports a range of habitats recognised under the Biodiversity Net Gain framework.
Grassland and Urban Habitats
Amenity Grassland: Widespread in parks, gardens, and sports fields, with potential for wildflower enhancement.
Urban Meadows: Increasingly promoted in open spaces to support pollinators and small wildlife.
Coastal and Marine Habitats
Saltmarsh: Found along harbour edges, supporting specialist plants and providing feeding grounds for waders.
Intertidal Mudflats: Important for migratory and overwintering bird species.
Shingle Beaches and Banks: Support coastal flora and invertebrates adapted to harsh saline conditions.
Woodland and Shrub Habitats
Urban Woodland and Scrub: Present in parks and brownfield sites, providing cover and nesting sites for birds and invertebrates.
Hedgerows and Tree Lines: Limited but valuable for connectivity and species movement.
Water and Wetland Habitats
Ponds and Artificial Wetlands: Located in parks and community spaces, supporting amphibians and aquatic invertebrates.
Portsmouth LPA BNG Planning
For BNG delivery in West Berkshire, high and very high distinctiveness habitats such as lowland calcareous grassland, lowland meadows, wood-pasture, and priority rivers are particularly important to protect and enhance. Restoration or creation of such habitats provides the highest biodiversity uplift but also carries stricter requirements under the BNG metric.
Conversely, improving lower distinctiveness habitats, such as modified grassland or cropland through buffer planting, hedgerow enhancement, or field margin creation, offers practical options for on-site or local BNG contributions.
High distinctiveness habitats such as saltmarsh and intertidal mudflats are critical for BNG and require protection and sensitive management.
Lower distinctiveness urban habitats, including amenity grassland and urban woodland, offer good opportunities for enhancement through planting schemes, invasive species control, and community engagement.

Portsmouth
Get notified of a scheme
We do not currently have any schemes covering this LPA.
Get notified when a scheme is available in this area.
Discover Schemes in
Portsmouth LPA
LPA
Restoring ecosystems and creating sustainable habitats 
through BNG and nutrient mitigation.
Are you looking to start a BNG scheme?
Talk to Greenshank and explore the opportunities we offer through your land.
Latest News

The potential impacts of the Levelling Up Bill on efforts to tack

Response to HBF Lords briefing


