Gamini Dissanayake (Petitioner In Sc 4/91) v. Kaleel, M.C.M. and Others – sllr 1993 volume 2 page 135

In the case between the petitioners (eight Members of Parliament from the United National Party) and officers of the United National Party (including the Leader, General Secretary, and its governing committees), the court addressed the validity of the expulsion of these MPs under Article 99(13)(a) of the Constitution. The court held that the party’s disciplinary process and the resultant expulsion were largely valid in law, reaffirming the principle that internal party discipline—when exercised with reference to the party constitution and essential procedural fairness—is a matter principally for the party’s decision-making bodies, subject to compliance with natural justice. This decision relied on the interpretation of constitutional provisions regarding party membership and earlier author