Needingworth Quarry and the RSPB
Together, we’re transforming a sand and gravel quarry into Europe’s largest manmade freshwater reedbed.
The RSPB, Cambridgeshire County Council and quarry operators at Needingworth are working together to transform a quarry into a thriving wetland nature reserve at Ouse Fen.
What began as a practical solution to mineral extraction has become one of the UK’s biggest conservation success stories – and a brilliant example of how industry and nature conservation can work hand in hand.
Reimagining the landscape
In the 1990s, demand for sand and gravel in Cambridgeshire was growing rapidly to support construction and development. At the same time, the UK’s freshwater reedbeds were disappearing, with coastal flooding threatening habitats that wildlife such as Bitterns depend on.
Land near Needingworth was identified for quarrying, with initial plans to restore it back to farmland once extraction ended. But the soil quality would have made productive farming difficult. Instead, a different idea emerged: to create a huge wetland that would support wildlife and benefit local communities.
It was an ambitious vision – and one that quickly gained support.
Working together for nature
Together with the quarry operator and Cambridgeshire County Council, we developed a long-term plan to create RSPB Ouse Fen nature reserve, by turning sections of the quarry into wetland habitat once mineral extraction had finished. The aim is to gradually create a rich mosaic of reedbeds, pools and channels, helping to replace wetland habitats lost elsewhere in the UK.
The scale of the project is extraordinary, with plans to create 450 hectares of freshwater reedbed habitat across a 700-hectare site – that’s roughly equivalent to the area of 1,000 football pitches!
From the outset, the partnership has been designed with nature in mind. Every wetland cell is carefully planned by RSPB ecologists, with tailored water depths, banks and islands created specifically to support target species and maximise biodiversity.
The UK’s largest freshwater reedbed
RSPB Ouse Fen is already a haven for wildlife and is set to become not only the UK’s largest freshwater reedbed, but also the largest manmade freshwater reedbed in Europe.
In its first 25 years, the project created more than 300 hectares of nature reserve, which have been transferred into RSPB ownership. By the late 2030s, the reserve is expected to reach its full size.
Under the RSPB’s stewardship, the site has become a nationally important breeding site for Bitterns, alongside other iconic wetland birds, including Marsh Harriers, Bearded Tits and Common Cranes. Back in 1997 there were just 11 booming male Bitterns left in the whole of the UK, but by 2026 Ouse Fen alone was home to 15!
The impact of this wetland creation work extends far beyond the site itself. Ouse Fen now links with neighbouring wetlands, including RSPB Fen Drayton Lakes and the Ouse Washes SSSI, helping to create a near-continuous wetland corridor spanning more than 3,000 hectares.
Together, these connected habitats are delivering nature recovery on a scale that no single site could achieve in isolation.
A partnership built to last
Ouse Fen shows what’s possible when eNGOs and mineral operatiors work together. The greatest opportunities can be realised when biodiversity is considered from the outset, before extraction begins.
The project began in 1999 with Hanson UK (now Heidelberg Materials) and despite a changes in the ownership of Needingworth Quarry it’s still going strong. Following its acquisition of the site in 2024, Brice Aggregates has continued the long-term vision, investing significantly in both the quarry and the restoration project.
Cambridgeshire County Council has also played a key role throughout the project, recognising the opportunity to balance the county’s need for construction materials with the creation of an important new wetland landscape for wildlife and visitors alike.
Meet your nature commitments with the RSPB
Whether you're meeting Biodiversity Net Gain obligations, securing environmental consent, or delivering long-term nature-positive projects, the RSPB can help your business achieve measurable outcomes for nature.
Ouse Fen is a leading example of how large-scale habitat restoration can create lasting environmental benefits. Through the Nature After Minerals (NAM) programme, we support the minerals sector at every stage of the restoration journey – from site selection and restoration design to species recovery and long-term aftercare.
By combining scientific expertise, practical training and proven restoration approaches, NAM helps make nature-positive outcomes a standard part of mineral extraction.
The RSPB manages more than 332,000 acres of land across the UK – more than almost any other organisation. Combined with 150 years of conservation expertise and a strong scientific foundation, we're uniquely placed to help businesses deliver meaningful, lasting benefits for nature.
If you’re interested in finding out how the RSPB can support your business to take action for nature, contact us at: corporate.partnerships@rspb.org.uk