In which of the following cases, the Supreme Court held first time that the principles of natural justice are applicable to administrative proceedings?

The court in A K Kraipak v. Union of India held that the selections made by the Selection Committee were in violation of the principles of natural justice because there was a real likelihood of a bias for the mere presence of the candidate on the Selection Board may adversely influence the judgment of other members. The Supreme Court ruled in A.K. Kraipak v. Union of India (AIR 1970 SC A) that a person who serves on a committee that selects candidates for a job must not be a candidate for the job himself. The logic is that the judges could be impartial and neutral. In this case, for the first time, without the assistance of any foreign judgement, the Supreme Court had decided that Principles of Natural Justice were applicable not only to judicial and quasi-judicial functions, but also to administrative functions.