Holcim UK Awarded Supply Contract for UK’s First Reservoir in Over 30 Years

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Holcim UK has secured a significant materials supply contract for the Havant Thicket reservoir project, marking the country’s first new reservoir development in more than 30 years.

This project, led by Future Water MJJV Ltd – a joint venture comprising Jones Bros Civil Engineering UK and JT Mackley & Co Ltd – represents a strategic response to water security and environmental challenges in Hampshire. With completion targeted for the early 2030s, the reservoir will provide an alternative, sustainable source of water to help protect the region’s internationally rare chalk rivers, thereby supporting long-term ecological resilience.

The reservoir will have a capacity of up to 8.7 billion litres and is expected to require roughly three years to fill upon completion. Holcim UK’s appointment underscores the importance of locally-sourced, high-quality construction materials that meet stringent specification requirements. Following comprehensive analysis of its available resources, Holcim identified marine sand from its Portsmouth operations as the optimal solution. This selection not only reflects technical suitability but also demonstrates a broader commitment to reducing the carbon footprint associated with construction supply chains – Holcim’s Portsmouth site offered a hyperlocal option, eliminating the need for carbon-intensive overseas procurement.

As part of its contractual obligations, Holcim UK will supply coarse aggregates (4-20mm) for the reservoir’s foundational base and dredged sand designed to function as drainage blankets within the facility’s complex drainage system. The logistics plan involves the use of articulated lorries, capable of transporting larger loads, further minimising transport emissions and enabling more efficient delivery schedules.

Commercial leaders from both Holcim UK and Future Water MJJV Ltd have emphasised the collaborative approach taken in aligning material sourcing strategies with both performance and environmental objectives. The ability to meet precise grading specifications, while offering a resilient, locally-sourced supply chain, provides further reassurance to main contractors and procurement teams engaged in critical infrastructure works.

For suppliers, subcontractors, and main contractors monitoring developments in the UK infrastructure sector, the Havant Thicket project signals robust opportunities across several business streams. Material providers capable of meeting sustainability and technical criteria will find their offers increasingly in demand, particularly on high-profile, environmentally sensitive infrastructure projects. Logistics providers and environmental consultancies may also identify scope for value-added services within the supply chain ecosystem established by this landmark initiative. The project sets a clear precedent, highlighting the integration of sustainable procurement within large-scale construction and infrastructure development in the UK.

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