“No students who were already in their final year at the time of the announcement would have been affected, and those who had not yet started or were in an earlier stage of their courses would have time in which to make alternative plans.”
“The … analogy is with planning law and practice which requires that all applications are determined in accordance with whatever policies are in force at the time the decisions are taken.”
“… a right given under the rules had actually come into existence by the time of the amendment”