Overview
- The final redetermination grants 17% of the £2.7 billion sought, cutting the provisional £556 million allowance to £463 million after consultation.
- Average bills for customers of Anglian, Northumbrian, South East, Southern and Wessex are expected to rise by 2.2% on top of the 24% increases previously set by Ofwat.
- The £93 million reduction from the provisional figure is largely attributed to market movements that lowered assessed financing costs.
- Any extra revenue is tied to defined outputs and performance, with Ofwat able to claw back funds if companies fail to deliver projects.
- Full determinations have been submitted to Ofwat and Defra, triggering a minimum two‑week statutory process before publication, as consumer advocates decry affordability and call for appeal‑process reform.