Thanks for the reference HWD.
One could argue that explanatory note 4 is just that, but it does make it harder to argue that flying an ILS does not require an ILS receiver, even though Schedule 5 does not mention it explicitly!
The placards required by AWN 84 limit non-immune equipment in light aircraft to "LA Class 3", which permits their use "for the facilitation of any flight outside controlled aispace under IFR or VFR". That would seem to meet the requirements of paragraph 2 of the directive.