Immigration – Leave to remain. The proceedings concerned renewed applications for permission to appeal against decisions of the Upper Tribunal (Immigration and Asylum Chamber) dismissing the applicants' appeals against the refusal of their application for variations of their existing leave to remain as Tier-1 (Post-Study Work) Migrants. The Court of Appeal, Civil Division, in refusing the applications, held, inter alia, that, in the circumstances, it was not arguable that the applicants had had a legitimate expectation that, after 6 April, their applications would be determined in accordance with the former policy.