Bills of Exchange Act 1882: Primary legislation governing promissory notes, their enforceability, defining requirements for valid promissory notes, and setting out rights and obligations of parties

Companies Act 2006: Key legislation relevant for shareholder relationships, corporate governance requirements, and share capital regulations

Law of Property (Miscellaneous Provisions) Act 1989: Legislation covering requirements for creation of valid legal documents and execution formalities

Contract Law Principles: Fundamental legal principles including offer and acceptance, consideration, intention to create legal relations, and capacity to contract

Consumer Credit Act 1974: Applicable if the shareholder is acting in individual capacity or if the arrangement could be classified as consumer credit

Financial Services and Markets Act 2000: Relevant if the note could be classified as a financial instrument, including regulatory implications

Limitation Act 1980: Legislation governing time limits for enforcement and statute of limitations considerations

Unfair Contract Terms Act 1977: Legislation covering reasonableness of terms and limitation of liability provisions in contracts