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Regulation

Our five year plan

Every five years, we go through a process called the price review. During this process, we formulate our plans for the next five years. A limit is set for customer bills, approved by our regulator Ofwat.

Illustration of Thames employees interacting with customers

Browse our regulatory plans and information by topic

Open Data Strategy

We aim to become a data-driven and open data water utilities company. Our strategy shows our commitment to transparency, innovation, and excellence.

Vulnerability Strategy

Our Vulnerability Strategy details our five-year plan for how we'll improve our support.

Drought

Environmental information regulation

Our regulators

Drainage and wastewater management

Abstraction incentive mechanism