Each individual has to update their own account. They can do that on this link.
To update email address please ask each user to log in to their account, in the top right hand corner of the website.
Click on the down arrow next to their name,
Select 'Manage your account'
Under 'My Details' you can see the option to change their email address.
Click on 'Change' (on the right hand side of the row)
Enter their new email address and click on 'Save changes'
Once you have done this, an email will be sent to the new address for you to verify your account.
Want to talk to us directly? Select the chat button (speech bubble icon) in the bottom right hand corner of the page. We're available Monday to Friday, 8:30am–5pm (excluding bank holidays).