Update your account details
It is important that you inform us of any changes to your name, mailing address, phone number, and bank account details (if it will affect your Direct Debit payments).
Call 0845 9200 888
Lines are open weekdays from 8am to 8pm and on Saturday from 8am to 1pm (Minicom or Typetalk: 0845 7200 899).
Online
Use our online form to update your account details.
Complete our online enquiry form
Please note that under the Data Protection Act, we can only discuss or change account details with named account holders.
Changing named account holders
When adding additional named account holders, we require confirmation from both the current named account holder and the person to be added.
If the main named account holder leaves your property, we require notification from a named account holder who is staying at the property.
If the people remaining at the property are not currently named account holders, you will need to complete our moving home form, or call us on 0845 9200 888. Lines are open weekdays from 8am to 8pm and on Saturday from 8am to 1pm (Minicom or Typetalk: 0845 7200 899).
Power of attorney
If you are granted power of attorney, please send copies of all supporting documents to:
Thames Water
PO BOX 286
Swindon
SN38 2RA
We will then update the named account.
