"An order by the State to the prejudice of a person in derogation of his vested rights may be made only in accordance with the basic rules of justice and fair play. The deciding authority, it is true, is not in the position of judge called upon to decide an action between contesting parties, and strict compliance with the forms of judicial procedure may not be insisted upon, he is, however, under a duty to give the person against whom an enquiry is held an opportunity to set up his version or defence and an opportunity to correct or to controvert any evidence in the possession of the authority which is sought to be relied upon to his prejudice. For that purpose the person against whom an enquiry is held must be informed of the case he is called upon to meet, and the evidence in support thereof. The rule that a party to whose prejudice an order is intended to be passed is entitled to a hearing applies alike to judicial tribunals and bodies of persons invested with authority to adjudicate upon matters involving civil consequences. It is one of the fundamental rules of our constitutional set up that every citizen is protected against exercise for arbitrary authority by the State or its officers. Duty to act judicially would, therefore, arise from the very nature of the function intended to be performed; it need not be shown to be super-added. If there is power to decide and determine to the prejudice of a person, duty to act judicially is implicit in the exercise of such power. If the essentials of justice be ignored and an order to the prejudice of a person is made, the order is a nullity. That is a basic concept of the rule of law and importance thereof transcends the significance of a decision in any particular case.... It is true that the order is administrative in character, but even an administrative order which involves civil consequences, as already stated, must be made consistently with the rules of natural justice after informing the first respondent of the case of the State, the evidence in support thereof and after giving an opportunity to the first respondent of being heard and meeting or explaining the evidence. No such steps were admittedly taken, the High
