Bills of Exchange Act 1882: Fundamental legislation governing negotiable instruments in the UK, setting out form requirements and enforceability provisions for promissory notes and other negotiable instruments

Law of Property (Miscellaneous Provisions) Act 1989: Governs the enforceability of written instruments and requirements for execution of deeds in England and Wales

Consumer Credit Act 1974: Applies if the note involves a consumer transaction, setting out regulatory requirements and consumer protections

Contract Law Fundamentals: Common law principles covering offer, acceptance, consideration, intention to create legal relations, and capacity to contract

Doctrine of Consideration: Common law principles requiring valuable consideration for contract validity and governing rules around past consideration

Financial Services and Markets Act 2000: Regulatory framework applicable if the note could be classified as a financial instrument, including specific requirements for financial products

Money Laundering Regulations 2017: Anti-money laundering requirements that may apply to the transaction context

Limitation Act 1980: Establishes time limits for enforcement of contractual obligations and legal claims