JUDGMENT

Arijit Pasayat, J.-These two appeals involve identical questions and, therefore, are disposed of by this common judgment after noticing the factual position, so far as they are relevant. The appellants question correctness of the judgment rendered by a Division Bench of the Madras High Court which held that the withdrawal of benefits extended to the appellants as subsidy was in order. The appellants questioned legality of the G.O.Ms. No. 989 dated 1.9.1988 directing discontinuance of purchase tax exemption in case of mills which exceeded the ceiling of Rs. 300 lakhs during the period of five years, and Government letter dated 28.12.1988 which made the aforesaid G.O.Ms. No. 989 of 1.9.1988 operative retrospectively from 1.4.1988. Initially the writ petitions were filed before the High Court, but after constitution of the Tamil Nadu Taxation Special Tribunal (hereinafter referred to as the Tribunal ) the writ petitions were transferred to the Tribunal which held that on application of the principles of promissory estoppel and legitimate expectation, the withdrawal of benefit was not sustainable in law. The State questioned correctness of the judgment before the High Court wh