High Quality Content by WIKIPEDIA articles! Barclays Bank Ltd v Quistclose Investments Ltd UKHL 4 (sub nom Quistclose Investments Ltd v Rolls Razor Ltd) is a leading property, unjust enrichment and trusts case, which invented a new species of proprietary interest. A "Quistclose trust" arises when an asset is given to somebody for a specific purpose and if for whatever reason the purpose for the transfer fails, the transferor may take back the asset.