The Nature of derivative: The Structure of financial derivative products -- The Legal analysis of swaps -- The Central legal issues in islingtion: Equity and modern financial techniques -- Restitution for want of consideration -- A Question of ideology: unjust enrichment or equity? -- The Conflict between equity and the law of unjust enrichment -- The Restitution analysis -- The Primacy of equity -- Alternative commercial approaches -- The Emerging principle of unjust enrichment -- The Suitability approach