Law of Property (Miscellaneous Provisions) Act 1989: Primary legislation governing written documents in England and Wales, particularly Section 1 regarding formal requirements for written agreements

Limitation Act 1980: Sets time limits for enforcing debts, generally allowing 6 years for simple contracts from the date of breach

Consumer Credit Act 1974: Regulates consumer credit agreements and provides protection for consumer debtors. Applies if one party is a consumer

Unfair Contract Terms Act 1977: Ensures contract terms are fair and reasonable, particularly important when dealing with consumer agreements

Doctrine of Consideration: Common law principle requiring that valid consideration must be given in exchange for the promise to pay

Capacity to Contract: Common law principle ensuring all parties have the legal capacity to enter into a binding agreement

Intention to Create Legal Relations: Common law principle requiring clear demonstration that parties intend to be legally bound by the agreement

Doctrine of Privity of Contract: Common law principle determining who has the right to enforce the contract, typically limiting enforcement rights to the contracting parties