Highlights some recent cases of interest to banks and their legal advisers. Reviews: (1) the Court of Appeal's decision in Re Spectrum Plus Ltd (In Liquidation) on whether a charge over the proceeds of a debenture was fixed or floating; (2) the House of Lords' judgment in Secretary of State for Trade and Industry v Frid, considering the set-off of contingent liabilities in a winding-up; and (3) the High Court's ruling in Gulf International Bank BSC v Albaraka Islamic Bank BSC on whether a bank was entitled to summary judgment relating to a claim for the restitution of money paid by mistake under a documentary credit.