Can I ask whereabouts you are, pm if u like, or whether you know of any neighbours also affected? Or whether it's now returned to normal? We phoned Thames Water who said nobody else had reported anything so it must be our plumbing......great help....if Thames water don't already know, it must be my fault....
I'm in one of the flats above shops on the station end of the high street. No idea if there are still problems as we had to leave for work. Not spoken to any neighbours either.
Sorry I can't be of more help. I was hoping someone who is at home during the day has experienced similar and could update. Hope it's back to normal by the time I finally get through the travel chaos and home!