Full Breakdown
White Horse Reservoir Advances Toward Planning Application
5/13/2026, 11:45:50 AM
Planning Milestone and Project Scope
The White Horse Reservoir, formerly the South East Strategic Reservoir Option, achieved a planning application milestone, confirmed by RAPID. The scheme will cover about 4.5 sq mi (7 sq km) and aims for construction readiness by 2029, operation by 2040.
Water Supply Context and Project Rationale
Southeast England faces a projected water shortfall of over two billion litres per day by 2055. RAPID, a partnership of Ofwat, the Environment Agency and the Drinking Water Inspectorate, deems large-scale storage essential. Thames Water calls the reservoir vital national infrastructure for up to 15 million customers.
Key Stakeholders
Thames Water leads the £7.5 bn project, funded by its customers and those of Affinity Water and Southern Water. RAPID oversees early development; Paul Hickey is its Managing Director. CPRE Oxfordshire and Safer Waters challenged the scheme in the High Court.
Timeline of Key Milestones
The 11-week public consultation ended in January 2024. A High Court dismissal of the judicial review followed. The planning application was lodged mid-2024, triggering RAPID’s milestone.
Data & Statistics
The reservoir will serve up to 15 million people, span 4.5 sq mi, cost £7.5 bn, and aim to offset a projected deficit of over two billion litres per day by 2055.
Anticipated Regional Impact
If constructed, the reservoir would provide a resilient water supply for the southeast, ease pressure on existing sources, and support long-term water security for London and surrounding counties.
Official Statements & Responses
RAPID’s Paul Hickey stressed the reservoir’s role in closing the supply gap and pledged scrutiny. Thames Water said the name change to White Horse Reservoir links the project to heritage and identity. Regulators said the planning step enables preparatory work while maintaining oversight.
Opposition and Environmental Concerns
CPRE Oxfordshire and Safer Waters argued the reservoir would devastate local ecology and livelihoods, raising habitat and landscape concerns despite the High Court dismissal.
Conflicting Reports & Gaps
The source presents a single narrative; no contradictory figures appear, and detailed impact assessments remain undisclosed.
Verbatim Quotes
- “The White Horse Reservoir is a major part of the plan for addressing this gap, providing resilient water supplies for up to 15 million customers across London and the south east,” — Paul Hickey, Managing Director, RAPID
- “This next step will allow the companies to complete the essential preparatory work needed to keep this scheme on track to be construction-ready by 2029.” — Paul Hickey, Managing Director, RAPID
- “We will continue to apply rigorous scrutiny at every stage to make sure this project delivers for customers, local communities and the environment.” — Paul Hickey, Managing Director, RAPID
Future Outlook
Following the planning application, RAPID will monitor preparatory work, while Thames Water refines design and engages stakeholders ahead of the 2029 construction target.
