Hammersmith and Fulham Council has accused Thames Water of ripping off its customers.
They claim that the super sewer isn't necessary - and that the company is being motivated by financial gain, rather than the environment.
“Water industry experts are lining up to say that Thames Water’s case for the super sewer is flawed. The Thames has won awards for its cleanliness but we all agree that it could be cleaner still. The question is how this is delivered and it appears Thames Water’s true motivation for pushing through this massive concrete tunnel has more to do with financial gain than cleanliness.”
The council argues that there are alternative solutions to the capital's sewage overflow problems - new drainage systems, for example, that could minimise the amount of fresh rain water entering the sewerage system.
They also claim that Thames Water stands to make "colossal returns at bill payers' expense".
More top news
The happy couple said they did not know about a high-profile social media campaign to find them until they got back from honeymoon.
On Sunday night in Stratford he'll try and break what's known as the Hour Record - racing laps of the velodrome for 60 minutes.
Disruption was expected to last well into the rush hour, threatening a repeat of chaotic scenes at London Bridge earlier this year.