Yorkshire Water CEO Nicola Shaw Resigns After Lowest Environmental Rating
Published on · Source: bbc.co.uk

AI Summary
Summarized by AI from the source belowYorkshire Water's chief executive, Nicola Shaw, announced her resignation effective January 1. This follows the company receiving the lowest possible environmental rating, one star out of four, from the Environment Agency. The rating reflected 260 pollution incidents in 2025, Yorkshire Water's highest since 2011.
Shaw has led Yorkshire Water since 2022 and will be replaced by Nicola Medalova, a chartered environmental health officer and former National Grid employee. Shaw faced criticism for undisclosed payments totaling £1.9m from 2023 to 2026 made by the parent company Kelda Holdings for investor engagement and financial oversight. Additionally, in 2024, Ofwat fined Yorkshire Water £47m for historic sewage leaks.
Shaw described her tenure as a privilege but recognized the need for change. Medalova will begin a transition period before fully assuming the CEO role in the new year. The Environment Agency's rating and Ofwat's fine highlight significant regulatory challenges for Yorkshire Water. These events and leadership changes matter to investors as they may influence future regulatory compliance costs and company performance under new management.
Informational only, not financial advice. Content is AI-generated and may contain errors. How this works.
Our take
Opinion from the Newsstocks AI desk, not investment adviceWe think the CEO resignation following the lowest environmental rating signals significant operational and reputational issues at Yorkshire Water. The undisclosed payments and large fine reflect governance concerns. The appointment of a new CEO with environmental expertise may help address regulatory challenges but risks remain given the company's recent performance.
Key numbers
- Pollution incidents in 2025
- 260
- Undisclosed payments
- £1.9m
- Ofwat fine
- £47m
- CEO resignation date
- 1 January
What could help
- New CEO Nicola Medalova has environmental health expertise which may improve company performance.
What could hurt
- Regulatory fines and poor environmental ratings indicate ongoing operational challenges for Yorkshire Water.
What to watch next
Nicola Medalova will begin a transition period before fully becoming Yorkshire Water's CEO in the new year.
The background
Environmental ratings assess how well companies manage pollution and comply with regulations. CEO changes often follow poor regulatory outcomes.
Questions readers ask
Why did Yorkshire Water CEO Nicola Shaw resign?
Nicola Shaw resigned following the company receiving the lowest environmental rating and shortly after the disclosure of undisclosed payments and a £47m fine.
What environmental rating did Yorkshire Water receive?
Yorkshire Water received one star out of four, the lowest possible rating, from the Environment Agency.
Who will replace Nicola Shaw as Yorkshire Water CEO?
Nicola Medalova, a chartered environmental health officer and former National Grid employee, will replace Shaw.
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