The applicant's case was that in reaching its decision, the committee had acted unfairly in failing to inform the applicant of the case against him and to give him an opportunity to be heard. 
It was plain that in order to determine whether the decisions of a particular body could be reviewed judicially, it was not always sufficient to apply a single test. 
In many cases it would be enough to enquire whether the source of the powers of the body concerned was statutory or <tag "515648">derived</> from the prerogative.   

