A groundbreaking initiative to unlock thousands of new homes across the country, whilst also protecting the health of the nation’s waterways, has been launched with the support of law firm Thrings.
In a first-of-its-kind for the UK, the National Rivers Consortium (NRC) – a partnership of environmental specialists, engineers and construction professionals – have launched a national nutrient credit bank that uses conservation covenants to secure the delivery of nutrient neutrality mitigation through septic tank upgrades (STU).
Credits – which can be purchased by developers to offset the nutrient impacts of their developments – are created through the positive environmental impact of a wide network of mitigation projects. This is primarily through the installation of advanced treatment plants, which remove phosphorus and nitrogen before they reach waterways.
The upgrades are provided to homeowners free of charge, with the resulting nutrient savings verified, converted into credits and made available to developers through a transparent, regulated system.
Backed by habitat restoration and rewilding experts RSK Biocensus, the appointed Responsible Body for the scheme under the Environment Act 2021, the scheme will be monitored to ensure STU compliance and that all nutrient offsetting activity delivers genuine and lasting environmental gain.
Thrings handled all legal aspects of the project for NRC, with a cross-departmental team led by Head of Natural Capital, Harvey Davies, developing the legal framework that underpins the nutrient credit bank.
This included:
- drafting the contracts for property owners looking to upgrade their septic tanks while balancing the requirements of consumer regulations with the need to secure robustly the benefits of the upgrades;
- the conservation covenant agreements with property owners to secure the benefits of the upgrades for the long term; and
- contractual documentation with developers looking to purchase nutrient credits for their developments.
Also supporting on the work with NRC were Fred Quartermain and Lorraine Neve from the firm’s Planning and Environment team, and Kate Westbrook, Elaine Meyrick and Bethan Shepherd from the Corporate and Commercial teams.
The innovative approach to the legal aspects of this project enables NRC to sell nutrient credits to developers directly, or in bundles to local authorities, and has been designed to readily meet the demands of Natural England as it designs its first Environmental Delivery Plans for nutrient neutrality.
Two iterations of the NRC’s nutrient mitigation schemes have already been launched in Norfolk and Kent. Supported by Thrings, these allow developers to offset nutrient impacts by purchasing credits generated through measurable improvements to water quality. Their success now serves as a blueprint for local authorities across the UK.
Graham Sinclair, UK Operations Manager for the National Rivers Consortium, said: “The launch of the national nutrient credit bank marks a transformative moment for both river restoration and sustainable development in the UK. By turning practical environmental improvements into a scalable national solution, this initiative creates a clear pathway to unlock stalled housing while delivering measurable benefits for water quality and local communities.
“What makes this approach so powerful is its ability to connect homeowners, developers and environmental outcomes in a way that delivers real change on the ground — reducing nutrient pollution at source and accelerating the recovery of some of our most sensitive catchments.
“We place enormous value on the work carried out by Thrings in enabling us to bring this offering to the market. We want to thank Harvey and the team for their ongoing efforts. Their expertise and collaborative approach were instrumental in translating an ambitious concept into a legally robust, operational scheme that can now be rolled out across the country.”
Harvey Davies, Thrings’ Head of Natural Capital and part of the firm’s Planning and Environment team, added: “This scheme represents a significant step forward in addressing one of the most complex challenges facing sustainable development in the UK – enabling much-needed housing delivery while securing long-term environmental improvements. It also provides a robust and effective way for under-resourced local authorities to discharge their duties under the habitats regulations and enable much needed development in their areas.
“We are pleased to have supported NRC on such a trailblazing project. Bringing together expertise from across Thrings, this work demonstrates how innovative legal structures can help unlock commercially focused environmental markets and deliver lasting positive outcomes for communities and ecosystems across the country.”
Thrings’ Planning and Environment lawyers have extensive experience in navigating complex local and national planning policy legislation and in overseeing the successful delivery of Natural Capital initiatives that facilitate the development of land across the country. To find out more, please get in touch.
