This can be done from by clicking 'Edit my Details' on the main menu
or by clicking the sidebar to bring up the side menu (click the three stripes in the top right-hand corner) of your account and choose ‘Edit my details'
From here you can change any of the details on your account.
Note, changing any login details (the password or email address) will trigger an email notifying you that a change has been made on the account.
When trying to update the email address that the account is registered to, this will trigger a four digit verification code to be sent to the new email address:
The email code you will receive:
If you enter the verification code correctly, the screen will update with a green message in the corner to confirm the email address has been changed, the next time you login, you will need to do so with the new email address: