PRINCIPLE: One of the principles of natural justice Nemo judex in causa sua, which means that no one should be a judge in his Own cause. In other words, no person can judge a case in which he has an interest. FACTS: 'X', a member of the selection board for a government service, was also a candidate for selection for the same service. 'X' did not take part in the deliberations of the board when his name was considered and approved.