A judgment not yet entered may be re-opened only in exceptional circumstances; the jurisdiction is not to be exercised for re-agitation of arguments already considered. A Court of Appeal decision remains binding on a single judge even where the underlying administrative determination upon which it was based has been subsequently set aside for apprehended bias, because such a determination is voidable rather than void and its avoidance ab initio does not retrospectively invalidate the appellate decision. An order that there be 'no order as to costs' is a positive judicial decision that costs lie where they fall, not a mere absence of any costs order.
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