“The Court of Appeal had jurisdiction to hear a proposed appeal from a decision of a court conducting extradition proceedings (which were criminal in nature), where that decision related to a matter which was wholly collateral to the extradition proceedings themselves, which was instigated by someone not a party to the proceedings and did not involve the lower court invoking its criminal jurisdiction or making an order which had any bearing on those proceedings.”
WLR Daily, 25th October 2011
Source: www.iclr.co.uk
