Group rejects nearly 80% of increases sought by companies.

Average additional increase in customer bills of 3% expected.

Extra money to fund more resilient supply, reduce pollution and reflect increased financing costs.

Background to the redetermination

A price control sets the amount of revenue companies are allowed to recover from customer bills. In December 2024, Ofwat published its decisions on PR24 – the price control for each of the 16 regulated monopoly companies covering the period 2025 to 2030 – a decision they said would lead to average bill increases of £157 (36%) over the next 5 years.

Five companies – Anglian Water, Northumbrian Water, South East Water, Southern Water, and Wessex Water – argued that Ofwat’s decision left them unable to meet the regulatory requirements set

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