I'm not aware of any restrictions other than what is on the NSW CaseLaw website:
Judicial decisions may be reproduced without infringing Crown copyright, subject to the following conditions:
1. copyright in judicial decisions continues to reside in the Crown;
2. the state reserves the right at any time to revoke, vary or withdraw the authorisation;
3. the publication of the material must not purport to be the official version;
4. the notice does not allow the reproduction of any headnote or summary, footnotes, comments, case lists, cross-references or other editorial material prepared by or for the Council of Law Reporting or other law report agency without the further authority of the Council or agency.
5. the arms of the state must not be used in connection with the publication unless authorisation is provided;
6. the publication of material is required to be accurately reproduced in proper context and to be of an appropriate standard.