Sathiadev, J.

1. (WA. No. 144 of 1987)-Fourth respondent in W.P. No. 1763 of 1980 is the appellant. The writ petitioner and the three other respondents therein, are the respondents herein. (Ranking of parties as in writ petition).

2. Petitioner filed the writ petition to quash the order of third respondent dated 8.8.1979 in and by which the seniority of the fourth respondent was revised in the comprehensive seniority list of Motor Vehicle Inspectors Grade-I. The impugned order was issued based on the order of Government in G.O.Ms. No. 1890, Home (Transport II) dated 27.7.1979. In the 1972 List, petitioner was ranked as No. 39, and fourth respondent as No. 51. By virtue of the impugned order, he became senior to petitioner by 12 places. Hence, when he filed the writ petition, the learned Judge allowed it on two grounds viz., (1) the seniority assigned by the Tamil Nadu Public Service Commission in the lower category will not be relevant for the next higher category, and (2) the revision of seniority done without opportunity to the affected persons offends principles of natural justice. Aggrieved against this decision, this appeal is preferred by fourth respondent.

3. Along with