sidmis,
If you visit
Prime Minister's Office , on the left hand frame there is a link to
RTI. You will see that many many people have applied to PMO for information including some very high profile cases.
The website also has a "contact us" bar at the bottom of the webpage. If you click on that, a form will open up. Just ask in that form about the name for the D/D or B/C, I am sure you will get a reply in a day.
Even on this forum, there are several posts about information from or pertaining to the PMO. Just do a search for "prime minister office" and you will get all the links to articles.
Even members of this board have applied to the PMO for information.