the big benefit (not) for any airside police need in HBA is that the local Tassie Police don't have ASIC, don't have airside access, and have to be met by a Duty Manager and escorted to the place of need.
No escort, no police. Not to mention that if, say, the police were busy with a siege of some sort, an aerodrome issue is put down the priority list, and the flight crew & aeroplane can just wait.