B (Algeria) v Home Secretary
 UKSC 4,  1 WLR 435
The appellant was being deported on national security grounds, but (in defiance of an order of the Special Immigration Appeals Commission) had persistently refused to disclose his true identity, thwarting the Commission’s ability to properly determine his appeal. He was sentenced to four months’ imprisonment, which was upheld on appeal by the Court of Appeal. Was the Court of Appeal’s approach to that appeal erroneous?