Definitions of official list
a list of securities which have a formal listing on the main market of an exchange; The Official List is the list of all securities that have been approved by the UK Listing Authority for trading on financial exchanges in the UK.
Click here for details of securities currently listed on the Official List of the UK Listing Authority.
an official (=recognised by an authority or other responsible organization) list of something rather than an unofficial list
The official list of competitors has now been released for this year's Arnold Classic.