Contract Law Formation

Understanding how contracts are formed is fundamental for anyone studying A-Level Law. Contract formation under English law governs how legally binding agreements arise, protecting parties and ensuring fair dealings.

Key Elements of Contract Formation

Contract formation in English law requires four essential elements:

• Offer
• Acceptance
• Consideration
• Intention to Create Legal Relations

Each element must be present for a contract to be legally enforceable. The absence of any may prevent a contract from arising.

Offer: Definition, Features, and Types

An offer is a clear expression of willingness to enter into a binding agreement on specified terms, made with the intention of receiving acceptance. Offers can be:

• Bilateral Offers: Promise exchanged for another promise (e.g., sale of goods).
• Unilateral Offers: Promise made in exchange for an act (e.g., reward for finding lost property).

It is vital to distinguish an offer from an invitation to treat, which invites negotiations but is not binding (e.g., shop displays, advertisements). A counter offer rejects the original offer and proposes new terms, terminating the initial offer.

Acceptance: Rules and Communication

Acceptance occurs when the offeree agrees to all terms of the offer. Acceptance must be communicated clearly, and silence does not constitute acceptance. Key rules include:

• Communication: Acceptance must be communicated to the offeror, unless waived.
• Postal Rule: Acceptance is effective when posted, not received, if post is an agreed method.
• Revocation: Offers can be revoked before acceptance, but revocation must be communicated. Unilateral offers may only be revoked before performance begins.

Intention to Create Legal Relations

For a contract to be valid, parties must intend to be legally bound. English law distinguishes between domestic and commercial agreements:

• Domestic Agreements: Presumed not to create legal relations (e.g., family arrangements), unless evidence shows otherwise.
• Commercial Agreements: Presumed to create legal relations, unless explicitly stated (e.g., "subject to contract").

Presumptions can be rebutted by clear evidence to the contrary.

Consideration: Meaning and Rules

Consideration is the price paid for a promise; it must be something of value given by both sides. Key rules include:

• Sufficiency: Consideration must be sufficient but need not be adequate (e.g., £1 for a car).
• Past Consideration: Not valid unless requested by the promisor.
• Pre-existing Duties: Generally, performing an existing duty is not valid consideration, unless it goes beyond what is already required.

Privity of Contract: Doctrine and Exceptions

The privity of contract doctrine means only parties to a contract can enforce its terms. However, there are exceptions:

• Statutory Exception: Under the Contract (Rights of Third Parties) Act 1999, third parties may enforce a contract if expressly identified and intended to benefit.
• Common Law Exceptions: Includes agency, trusts, and collateral contracts.

Understanding these exceptions is crucial for analysing scenarios where third parties seek to enforce contractual rights.

Key Concepts Summary

Essential Knowledge for Contract Law Scenarios

• Always identify the four elements of contract formation: offer, acceptance, consideration, intention.
• Distinguish offers from invitations to treat and counter offers.
• Apply the rules of communication, postal rule, and revocation for acceptance.
• Remember the presumptions for legal intention in domestic and commercial agreements.
• Check consideration for sufficiency, adequacy, past consideration, and pre-existing duties.
• Understand privity and its statutory/common law exceptions for third party rights.