What is OBA account Royal Mail?
Online Business Account (OBA) allows customers with a Royal Mail business account to manage and pay their bills for Royal Mail services online.
How do I find my Oba number?
This is your Royal Mail account ID and it is a 10-digit number usually starting with '0'. You can find this in your Royal Mail online business account (OBA) > navigate to User details where Account number is displayed or refer to a recent monthly invoice.