Ofwat's decision to reject Thames Waters' bid to increase prices by 8% is final, but Thames Water could appeal to the Competition Commission.
The company said: "We will review the decision carefully before deciding on our next steps."
More top news
Pitt was due to attend the premiere of a new documentary he narrated, but instead will focus on his "family situation".
ITV News spoke to six Democrats and Republicans to get their views on the dramatic showdown between the two presidential hopefuls.
Nicolas Sarkozy would give Britain the chance to reverse the Brexit vote if he is elected president of France.