CONTRACT LAW
COMPLETE REVISION BUNDLE
LLB · Common Law · Distinction Level
English Contract Law
WHAT'S INSIDE
Section 1 — Full Teaching Prose Revision Guide (11 Topics)
Section 2 — Detailed Case Bank (40+ Cases)
Section 3 — Three Distinction-Level IRAC Model Answers
Section 4 — First Class Exam Technique Guide
For law students across all common law jurisdictions
, SECTION 1 FULL TEACHING REVISION
GUIDE
This section explains Contract Law the way your lecturer should — in full, flowing prose. Each
topic is covered in depth, explaining not just what the law is, but why it exists, how it
developed, and how the doctrines connect to each other. Read this section to build genuine
understanding, not just surface-level memorisation.
1. Offer
Contract law begins with the idea of agreement, and the first step in identifying an agreement
is determining whether a valid offer has been made. An offer is not just any statement made
during negotiations; it is a clear and definite expression of willingness to contract on specific
terms, intended to become legally binding as soon as it is accepted. This definition is important
because it distinguishes offers from preliminary discussions, which carry no legal weight.
The law draws a firm distinction between an offer and what is known as an invitation to treat.
An invitation to treat is simply an invitation for others to make offers — it does not bind the
party making it. This distinction exists for practical reasons. When a shop displays goods on
shelves, it would be commercially unworkable if that display were treated as a binding offer to
sell to anyone who picked up the item. Instead, the customer makes the offer at the checkout,
and the shop retains the right to accept or reject it. This reflects a broader principle: the law
aims to reflect commercial reality and flexibility, rather than rigidly enforcing every statement
made during negotiations.
The case law reinforces this distinction powerfully. In Harvey v Facey, the court held that
merely stating a price is not an offer but a provision of information. The reasoning is that not
every statement during negotiations demonstrates an intention to be bound. By contrast, in
the landmark case of Carlill v Carbolic Smoke Ball Co, the court recognised that even an
advertisement could amount to an offer where it was sufficiently clear and definite. The
company's deposit of money in the bank was treated as objective evidence of a genuine
intention to be bound — showing that the law focuses on conduct, not merely words.
Understanding offers requires appreciating the underlying principle of objectivity in contract
law. The courts do not ask what the parties subjectively intended, but rather what a reasonable
person would understand from their words and conduct. This ensures certainty and
predictability, which are essential for both everyday transactions and complex commercial
dealings. The doctrine of offer, therefore, is not just a preliminary step in contract formation
— it reflects the law's commitment to clarity and deliberate commitment.
2. Acceptance
Once a valid offer has been made, the next step in forming a contract is acceptance. Acceptance
is defined as an unqualified expression of assent to the terms of the offer, meaning that the
offeree must agree to the offer exactly as it is presented. This is known as the mirror image
rule, and it reflects the idea that a contract is formed only when both parties are in complete
and identical agreement.
The requirement that acceptance must be unqualified is crucial because it ensures that the
parties have reached what is traditionally described as a meeting of the minds, or consensus
ad idem. If the offeree attempts to change any of the terms — even in a small respect — this is
not acceptance but a counter-offer. The effect of a counter-offer is to reject the original offer
entirely and substitute a new one, as established in Hyde v Wrench. The reasoning behind this
, rule is that once an offer has been rejected, the offeror should not remain indefinitely bound
by terms they have moved on from. This promotes fairness and clarity in negotiations.
Communication is another essential element of acceptance. As a general rule, acceptance must
be communicated to the offeror, because a contract cannot exist unless both parties are aware
that an agreement has been reached. However, contract law recognises exceptions where strict
communication would be impractical. The most notable is the postal rule, established in
Adams v Lindsell, where acceptance is effective upon posting rather than upon receipt. This
exception developed in response to the practical realities of communication in the 19th
century, and it demonstrates how contract law evolves to accommodate the needs of commerce
and everyday life.
The rules on acceptance also highlight the importance of distinguishing between different
types of communication. In Entores v Miles Far East, the court held that instantaneous
methods of communication — such as telex and, by extension, modern email or text messages
— require acceptance to be received rather than merely sent. This reflects a broader and
enduring principle: contract law adapts its rules to technological and commercial context,
ensuring that contract formation remains both fair and workable in changing circumstances.
3. Consideration
Consideration is often described as the price of the promise, and it represents one of the most
distinctive features of English contract law. It requires that each party must give something of
legal value in exchange for the other's promise. This requirement ensures that contracts are
based on bargains rather than mere gratuitous promises, reflecting the law's fundamental
focus on reciprocal obligations.
The rule that consideration must be sufficient but not adequate illustrates the law's deep
respect for individual autonomy. The courts are not concerned with whether a bargain is fair
or equal in economic terms; they are concerned only with whether something of legal value
has been exchanged. In Thomas v Thomas, even a nominal payment of one pound per year
was held to be sufficient consideration, demonstrating that the law will not interfere with the
substance of an agreement as long as basic legal requirements are met. Parties are free to make
bad bargains.
However, the doctrine of consideration also imposes meaningful limitations. One of the most
controversial is the rule in Foakes v Beer, which holds that part payment of a debt is not good
consideration for a promise to discharge the remainder. The reasoning is that the debtor is
already under a legal obligation to pay the full amount, and therefore provides nothing new in
exchange for the creditor's promise to forgo the balance. Despite its logical coherence, this rule
has attracted significant criticism for failing to reflect commercial reality, particularly where
creditors actually benefit from early or certain payment.
Modern developments suggest a gradual shift towards greater flexibility. In Williams v Roffey
Bros, the court recognised that a practical benefit received by the promisor can amount to valid
consideration, even where the promisee is already under a pre-existing contractual obligation.
This reflects a broader trend in contract law towards fairness and commercial common sense.
Additionally, the equitable doctrine of promissory estoppel — rooted in Central London
Property v High Trees — allows courts to prevent a party from unconscionably going back on
a clear promise that has been relied upon. Together, these developments demonstrate that
consideration, while foundational, must be understood in the context of evolving commercial
and equitable principles rather than as a rigid, mechanical rule.
4. Intention to Create Legal Relations
Even where there is agreement and consideration, a contract will not exist unless the parties
intended their agreement to be legally binding. This requirement reflects a fundamental
COMPLETE REVISION BUNDLE
LLB · Common Law · Distinction Level
English Contract Law
WHAT'S INSIDE
Section 1 — Full Teaching Prose Revision Guide (11 Topics)
Section 2 — Detailed Case Bank (40+ Cases)
Section 3 — Three Distinction-Level IRAC Model Answers
Section 4 — First Class Exam Technique Guide
For law students across all common law jurisdictions
, SECTION 1 FULL TEACHING REVISION
GUIDE
This section explains Contract Law the way your lecturer should — in full, flowing prose. Each
topic is covered in depth, explaining not just what the law is, but why it exists, how it
developed, and how the doctrines connect to each other. Read this section to build genuine
understanding, not just surface-level memorisation.
1. Offer
Contract law begins with the idea of agreement, and the first step in identifying an agreement
is determining whether a valid offer has been made. An offer is not just any statement made
during negotiations; it is a clear and definite expression of willingness to contract on specific
terms, intended to become legally binding as soon as it is accepted. This definition is important
because it distinguishes offers from preliminary discussions, which carry no legal weight.
The law draws a firm distinction between an offer and what is known as an invitation to treat.
An invitation to treat is simply an invitation for others to make offers — it does not bind the
party making it. This distinction exists for practical reasons. When a shop displays goods on
shelves, it would be commercially unworkable if that display were treated as a binding offer to
sell to anyone who picked up the item. Instead, the customer makes the offer at the checkout,
and the shop retains the right to accept or reject it. This reflects a broader principle: the law
aims to reflect commercial reality and flexibility, rather than rigidly enforcing every statement
made during negotiations.
The case law reinforces this distinction powerfully. In Harvey v Facey, the court held that
merely stating a price is not an offer but a provision of information. The reasoning is that not
every statement during negotiations demonstrates an intention to be bound. By contrast, in
the landmark case of Carlill v Carbolic Smoke Ball Co, the court recognised that even an
advertisement could amount to an offer where it was sufficiently clear and definite. The
company's deposit of money in the bank was treated as objective evidence of a genuine
intention to be bound — showing that the law focuses on conduct, not merely words.
Understanding offers requires appreciating the underlying principle of objectivity in contract
law. The courts do not ask what the parties subjectively intended, but rather what a reasonable
person would understand from their words and conduct. This ensures certainty and
predictability, which are essential for both everyday transactions and complex commercial
dealings. The doctrine of offer, therefore, is not just a preliminary step in contract formation
— it reflects the law's commitment to clarity and deliberate commitment.
2. Acceptance
Once a valid offer has been made, the next step in forming a contract is acceptance. Acceptance
is defined as an unqualified expression of assent to the terms of the offer, meaning that the
offeree must agree to the offer exactly as it is presented. This is known as the mirror image
rule, and it reflects the idea that a contract is formed only when both parties are in complete
and identical agreement.
The requirement that acceptance must be unqualified is crucial because it ensures that the
parties have reached what is traditionally described as a meeting of the minds, or consensus
ad idem. If the offeree attempts to change any of the terms — even in a small respect — this is
not acceptance but a counter-offer. The effect of a counter-offer is to reject the original offer
entirely and substitute a new one, as established in Hyde v Wrench. The reasoning behind this
, rule is that once an offer has been rejected, the offeror should not remain indefinitely bound
by terms they have moved on from. This promotes fairness and clarity in negotiations.
Communication is another essential element of acceptance. As a general rule, acceptance must
be communicated to the offeror, because a contract cannot exist unless both parties are aware
that an agreement has been reached. However, contract law recognises exceptions where strict
communication would be impractical. The most notable is the postal rule, established in
Adams v Lindsell, where acceptance is effective upon posting rather than upon receipt. This
exception developed in response to the practical realities of communication in the 19th
century, and it demonstrates how contract law evolves to accommodate the needs of commerce
and everyday life.
The rules on acceptance also highlight the importance of distinguishing between different
types of communication. In Entores v Miles Far East, the court held that instantaneous
methods of communication — such as telex and, by extension, modern email or text messages
— require acceptance to be received rather than merely sent. This reflects a broader and
enduring principle: contract law adapts its rules to technological and commercial context,
ensuring that contract formation remains both fair and workable in changing circumstances.
3. Consideration
Consideration is often described as the price of the promise, and it represents one of the most
distinctive features of English contract law. It requires that each party must give something of
legal value in exchange for the other's promise. This requirement ensures that contracts are
based on bargains rather than mere gratuitous promises, reflecting the law's fundamental
focus on reciprocal obligations.
The rule that consideration must be sufficient but not adequate illustrates the law's deep
respect for individual autonomy. The courts are not concerned with whether a bargain is fair
or equal in economic terms; they are concerned only with whether something of legal value
has been exchanged. In Thomas v Thomas, even a nominal payment of one pound per year
was held to be sufficient consideration, demonstrating that the law will not interfere with the
substance of an agreement as long as basic legal requirements are met. Parties are free to make
bad bargains.
However, the doctrine of consideration also imposes meaningful limitations. One of the most
controversial is the rule in Foakes v Beer, which holds that part payment of a debt is not good
consideration for a promise to discharge the remainder. The reasoning is that the debtor is
already under a legal obligation to pay the full amount, and therefore provides nothing new in
exchange for the creditor's promise to forgo the balance. Despite its logical coherence, this rule
has attracted significant criticism for failing to reflect commercial reality, particularly where
creditors actually benefit from early or certain payment.
Modern developments suggest a gradual shift towards greater flexibility. In Williams v Roffey
Bros, the court recognised that a practical benefit received by the promisor can amount to valid
consideration, even where the promisee is already under a pre-existing contractual obligation.
This reflects a broader trend in contract law towards fairness and commercial common sense.
Additionally, the equitable doctrine of promissory estoppel — rooted in Central London
Property v High Trees — allows courts to prevent a party from unconscionably going back on
a clear promise that has been relied upon. Together, these developments demonstrate that
consideration, while foundational, must be understood in the context of evolving commercial
and equitable principles rather than as a rigid, mechanical rule.
4. Intention to Create Legal Relations
Even where there is agreement and consideration, a contract will not exist unless the parties
intended their agreement to be legally binding. This requirement reflects a fundamental
