Court of Appeal self-correction: A weakness in the system

If the High Court can, through judicial review, invalidate earlier decisions of itself and lower courts where they are found to have been made in a procedurally improper way, and if the House of Lords can do the same thing in respect of its decisions, who has jurisdiction to review the Court of Appeal? If the answer is, as some might say, "no court can review the procedural work of the Court of Appeal" is that fair? This article gives a critical analysis and opinion on that question