8. Under Sub-section 1(b) of Section 8 of the Act, the Tribunal functions as Appellate Authority to consider applications of all person(s) aggrieved by any order of the Rent Controller. Sub-section (1) of Section 13 of the Act provides the right to appeal to the Tribunal from any order of the Rent Controller. The learned counsel for the Respondent is right in referring to Sub-section (1) of Section 10 of the Act which provides, inter-alia , that the Rent Controller and the Tribunal shall not be bound by the procedure laid down by the CPC, but shall be guided by the principle of natural justice and subject to the other provisions of the Act or the Rules made thereunder and shall have powers to regulate their own procedure. Rules of natural justice are not embodied rules. They being means to an end and not an end in themselves, it is not possible to make an exhaustive catalogue of such rules. See: Swadesh Cotton Mills v. Union of India, AIR 1981 SC 818. It is not possible to lay down any rigid rule as to which principle of natural justice is to be applied. There is no such thing as technical natural justice. The requirement of natural justice depends upon the facts and circumstances of the case, the nature of the enquiry, the rules under which the Tribunal is acting, the subject-matter to be dealt with and so on. The concept of fair play in action which is the basic natural justice must depend upon the particular lis between the parties. See: Sawai Singh v. State of Rajasthan, ( 1986) 3 SCC 454 and V.K.Thampi v. CCE, 1990 (48) ELT (Ker). Describing natural justice as a pervasive facet that enlivens legislation, administration and adjudication, to make fairness a creed of life, the Apex Court stated in Mohinder Singh Gill v. Chief Election Commissioner, (AIR 1998 SC 851) that it has many colours and shades, many forms and shapes and, save where valid law excludes it, applies when people are affected by acts of Authority, and further that, today its application must be sustained by current