Principal Secretary to the Prime Minister of India Principal Secretary to the Prime Minister of India The Principal Secretary to the Prime Minister of India (PS to the PM; IAST: ) is the senior-most bureaucrat in, and the administrative head of, the Prime Minister's Office. The officeholder is generally a civil servant, commonly from the Indian Administrative Service and occasionally from the Indian Foreign Service. The post is considered one of the most influential in the Indian civil services, and some principal secretaries are considered more powerful and influential than senior government ministers. The Prime Minister's Secretariat (PMS)—headed by an officer of the rank of joint secretary to
Council of Civil Service Unions v Minister for the Civil Service invariable practice of the executive as forming a basis for legitimate expectation. The case also shows that national security remains a political issue and not a legal one; it is not to be determined by a court. It summarises the scope of judicial review. In "R (Bancoult) v Secretary of State for Foreign and Commonwealth Affairs (No 2)", heard at the House of Lords, one of the matters decided was whether or not the courts could subject Orders in Council to judicial review. The Lords unanimously agreed that although Orders in Council were defined as "primary legislation" in the Human