Water regulator Ofwat has turned down Thames Water's application for an additional price increase for 2014 to 2015.
Ofwat says it was for Thames Water to justify the proposed 8% increase was in customers’ interests.
Within the three month timescale for assessing the application, the water regulator found the evidence the company submitted did not justify its proposed £29 additional increase in customers' bills.
Ofwat’s decision means the maximum that Thames can add to customers’ bills for 2014-15 is still 1.4% above inflation, as set in the 2009 price review.
More top news
Donald Trump has "rattled" world leaders and they have good reason to feel that way, according to Barack Obama.
Hollywood film directors are being asked by the US government to help combat the allure of the so-called Islamic state on social media.
A cross-party group of politicians have teamed up to launch a campaign to "take a stand" against online abuse.