I’ve lost my top-up code.

You can retrieve previous top-up codes by logging in to your online account. Once logged in select the ‘View previous top-up code’ button on your account dashboard.
 
Please note that the top-up must of been purchased within 14 days either online or via our automatic telephone service. Unfortunately, you cannot retrieve top-up codes purchased at the Post Office or PayPoint from your online account. To retrieve these codes, please contact us. 

For future top-ups, you can request an email or SMS copy of your receipt, which will include your top-up code. Keeping a copy can be useful if you ever need to refer back to it or avoid losing it again.