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LDC reinvests in UK water specialist Stonbury, with Federated Hermes co-investing

Reported by Pehub
Sep 30, 2026· 2 min read
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Key Takeaways
  • • LDC reinvests in Stonbury alongside Federated Hermes as co-investor, signaling continued confidence in the UK water asset maintenance and repair specialist.
  • • Stonbury has demonstrated strong financial performance, with revenue increasing 74 percent to £78 million since 2022, reflecting robust demand in critical infrastructure services.
  • • The reinvestment structure involves both existing and new institutional capital, positioning Stonbury for further growth in the UK's water sector.
  • • Stonbury's operational focus on water asset maintenance and repairs addresses essential infrastructure needs in a heavily regulated, cash-generative market segment.
Summary
LDC, the mid-market private equity firm, is reinvesting in Stonbury, a Bedfordshire-based water specialist focused on maintaining and repairing water assets across the UK. Federated Hermes has joined the transaction as a co-investor, demonstrating institutional appetite for the company's growth trajectory and market position.

Stonbury's financial performance provides the foundation for this reinvestment decision. Since 2022, the company has grown revenue by 74 percent to reach £78 million, indicating strong underlying demand for water infrastructure maintenance and repair services. This growth rate reflects both organic expansion and the essential nature of Stonbury's business within the UK's tightly regulated water sector, where aging infrastructure and regulatory compliance requirements drive sustained capital deployment.

The co-investment structure with Federated Hermes adds institutional depth to the capital raise, suggesting a phased expansion strategy typical of water and utility infrastructure plays. Both investors recognize that water asset maintenance represents a defensive, recurring-revenue business model with limited cyclical exposure, characteristics valued in current macroeconomic conditions.

This transaction underscores ongoing institutional investor interest in UK infrastructure assets, particularly in regulated utility sectors where stable cash flows and essential service provision create predictable return profiles. The reinvestment validates Stonbury's operational execution and market positioning while positioning the company for potential further geographic expansion or service line extension within water infrastructure.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Pehub LDC reinvests in UK water specialist Stonbury, with Federated Hermes co-investing