Windsor and Maidenhead
Expert support for Biodiversity Net Gain in Windsor and Maidenhead. BNG assessments, habitat mapping & access to local BNG units.
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Biodiversity Net Gain in Windsor and Maidenhead Local Planning Authority
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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.
<p>Windsor and Maidenhead, a unitary authority in Berkshire, combines historic towns with extensive rural landscapes and river corridors. Covering approximately 226 square kilometres, the area includes the towns of Windsor, Maidenhead, and surrounding villages, with significant green spaces, woodlands, and parts of the Thames Valley.</p><p></p><p>Aligned with the Environment Act 2021, Windsor and Maidenhead Borough Council requires most development projects to achieve a minimum of 10% Biodiversity Net Gain (BNG). This may be delivered via on-site habitat creation or enhancement, off-site biodiversity units, or contributions to ecological networks.</p><p></p><p>The LPA lies within the Chilterns, the Thames Valley and the Thames Basin Heaths National Character Areas, featuring habitats such as ancient woodlands, chalk grasslands, river floodplains, and wetland mosaics, all important for regional biodiversity and conservation priorities.</p><p></p><p>The mix of urban, rural, and riverine habitats presents opportunities for integrating BNG through habitat restoration, creation, and sustainable land management.</p><p></p><p>For developers, landowners, and planning professionals working in Windsor and Maidenhead, understanding local habitats, planning policy, and biodiversity priorities is essential. Our team offers detailed BNG assessments, habitat surveys, and practical support for biodiversity enhancement.</p><p></p><p>To learn more or receive updates about BNG units and schemes in the area, get in touch with us.</p>
Habitats in Windsor and Maidenhead Local Planning Authority
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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.
<p>The landscape supports a variety of habitats recognised under the Biodiversity Net Gain framework.</p><p></p><p>Grassland Habitats</p><p>Chalk and Calcareous Grassland: Found on upland areas, rich in wildflowers and invertebrates.</p><p>Floodplain Meadows: Along the Thames and tributaries, supporting diverse plant and bird species.</p><p></p><p>Woodland and Forest Habitats</p><p>Ancient and Semi-Natural Woodland: Widespread, providing habitat for birds, bats, and fungi.</p><p>Mixed Woodland: Common across rural and suburban areas.</p><p></p><p>Wetland and Watercourse Habitats</p><p>Rivers and Streams: The Thames and its tributaries flow through the area, supporting aquatic and riparian species.</p><p>Ponds and Reedbeds: Present in floodplain and wetland areas, essential for amphibians and wetland birds.</p><p></p><p>Hedgerows and Linear Features</p><p>Species-Rich Hedgerows: Key wildlife corridors linking habitats across agricultural and suburban landscapes.</p>
Windsor and Maidenhead 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.
<p>High distinctiveness habitats such as ancient woodland, chalk grassland, and floodplain meadows are critical for meaningful BNG and require targeted protection and enhancement.</p><p></p><p>Lower distinctiveness habitats like improved grassland and urban green spaces offer flexible options for habitat creation and biodiversity uplift.</p>

<p>Windsor</p><p>Maidenhead</p>
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