This document discusses the duty of confidentiality that banks owe to their customers. It references the 1924 UK court case Tournier v National Provincial and Union Bank of England, where the court found the duty of confidentiality to be a legal one arising from contract between a bank and its customer. However, the duty was found to be qualified rather than absolute. The document requests a critical discussion of this statement from the referenced court case in an essay formatted according to Oscola referencing standards, including footnotes and a bibliography with 20-30 sources.