 Though Appellate Committees met in separate committee rooms, judgement was given in the Lords Chamber itself.No further appeal lay from the House of Lords, although the House of Lords could refer a "preliminary question" to the European Court of Justice in cases involving an element of European Union law, and a case could be brought at the European Court of Human Rights if the House of Lords did not provide a satisfactory remedy in cases where the European Convention on Human Rights was relevant.A distinct judicial function—one in which the whole House used to participate—is that of trying impeachments.