This was received from the local police and may be of use to you
Hope you are well.
We have had recent reports of bogus callers stating they are from the water board.
Please see the below link from Thames Water with advice on how to protect yourself.
Total Policing is the Met's commitment to be on the streets and in your communities to catch offenders, prevent crime and support victims. We are here for London, working with you to make our capital safer.