The UK's biggest water company has admitted it paid no corporation tax for the last three years.
Thames Water, who saw revenues of nearly £2 billion and above inflation price rises, said they were not performing a "tax dodge" but were following the government's rules.
ITV News Business Editor Laura Kuenssberg, has been hearing how they do it.
More top news
Friday will be largely dry with a mixture of cloud and some sunny spells, the best of these in the morning.
Thousands of cancer patients are dying in hospital every year against their wishes, according to a new report.
The Cancer Drugs Fund, which cost £1.27 billion, didn't deliver "meaningful value" to patients - and even put some at risk of side effects.