Ann: Scheme Meeting Results, page-74

"Treasury cannot comment on the application of the foreign investment arrangements as they apply or could apply to particular cases. This means that Treasury cannot comment on any case that is currently under review, has been reviewed or even whether there was an original FIRB application. Under the Foreign Acquisitions and Takeovers Act 1975 (FATA) protected information relating to FIRB cases cannot be disclosed unless an exemption in the FATA applies."

If the whole process is treated as opaque "secret men's business", it certainly makes it hard to know, even in retrospect, if the FIRB has made their assessment on correct information or what they are taking into account.
It is a case of "Don't you worry about that."

I wonder there is any information entailed in the FIRB assessment and decision that is not protected. Nope.
It appears that the default position is that it is all protected unless otherwise excepted, and in practice, there will be few exceptions.

"FOREIGN ACQUISITIONS AND TAKEOVERS ACT 1975 - SECT 120
Meaning of protected information
(1) Information is protected information if the information is obtained under, in accordance with or for the purposes of this Act, except:..."

The provisions for information disclosure read like they were written by Sir Humphrey Appleby.

Cheers.