This article refers to accounts set up before May 2012.
This article will show you how to locate your 123-reg account username.
Please note: If you have set up an account after May 2012, you will no longer have a username as your log in credentials are based on the email address you have linked to your account.
Log in to your 123-reg account.
Scroll down to the Account Management section and click on the Update Personal Information link.
Your username will be located at the the top of the page.
Please note: Newer 123-reg Accounts do not have a username, instead you will see your account's email address at the top of the page.