Bills of Exchange Act 1882: Primary legislation governing promissory notes in England and Wales. Defines valid promissory notes (Section 83) and establishes requirements for form and content.

Law of Property (Miscellaneous Provisions) Act 1989: Relevant for secured promissory notes and sets out requirements for creation of legal charges.

Consumer Credit Act 1974: Applies if the promissory note involves a consumer transaction. Sets out regulatory requirements and consumer protections.

Limitation Act 1980: Establishes statutory limitation periods for enforcement, generally 6 years for simple contracts.

Contract Law Principles: Common law fundamentals including consideration, capacity to contract, and intention to create legal relations.

Doctrine of Amendment: Common law rules regarding valid amendments to existing agreements and the requirement for consideration in amendments.

Stamp Duty Legislation: Tax considerations for certain types of promissory notes and their amendments.

Financial Services and Markets Act 2000: May be applicable depending on the nature and context of the promissory note transaction.

Money Laundering Regulations 2017: Regulatory requirements for compliance with anti-money laundering provisions in financial transactions.