Chapter Overview: Vitiating Factors
Welcome to one of the most exciting and practical areas of Contract Law! In contract formation, we assume that both parties enter an agreement freely, openly, and voluntarily. But what happens when an agreement is tainted by a lie or forced by extreme economic bullying?
In legal terms, a vitiating factor is a flaw or defect present at the time a contract is formed that ruins (vitiates) genuine, voluntary consent. When a vitiating factor is present, the law steps in to protect the innocent party.
Crucial Rule to Remember:
A vitiated contract under this topic is generally voidable, NOT automatically void.
• Void: The contract never legally existed at all (dead on arrival).
• Voidable: The contract is valid and binding until the innocent party takes legal steps to cancel (rescind) or set it aside.
For your AQA Paper 3 (Law of Contract) exam, you need to master two key vitiating factors:
1. Misrepresentation (dealing with untrue statements)
2. Economic Duress (dealing with illegitimate commercial pressure)
Part 1: Misrepresentation
1. Definition of an Actionable Misrepresentation
Don't worry if legal definitions seem wordy—break this down into three key ingredients. An actionable misrepresentation is:
"An unambiguous false statement of material fact or law, made by one party to another, which induces the representee to enter into the contract."
Let's unpack the three elements:
Element 1: There Must Be a False Statement
A false statement can be made in writing, spoken aloud, or even through conduct.
• Spice Girls Ltd v Aprilia World Service BV (2002): All five members of the pop group took part in promotional filming for a scooter sponsorship, knowing that one member (Geri Halliwell) planned to leave. Their collective participation was held to be a misrepresentation by conduct that the group would remain together.
Element 2: It Must Be a Statement of Fact (Not Opinion or Puff)
The law distinguishes between cold, hard facts and general sales talk or personal views:
• Mere Puff (Sales Talk): Exaggerated advertising claims ("the best coffee in town") are not intended to be taken literally and are not actionable statements of fact.
• Statements of Opinion: An honest statement of opinion is generally not a statement of fact.
Bisset v Wilkinson (1927): A seller stated that a piece of land in New Zealand could support 2,000 sheep. Both parties knew the seller had never run sheep on that land. This was an honest opinion, not a statement of fact.
• Expert Opinions (Exception): If the person giving the opinion has special knowledge or is in an expert position, the law implies that they have a factual basis for their opinion.
Esso Petroleum Co Ltd v Mardon (1976): An experienced Esso representative estimated a petrol station's annual throughput. Because Esso had superior expertise, this was held to be an actionable misrepresentation rather than a simple opinion.
What About Silence? (The Rule on Non-Disclosure)
Under English law, the starting point is caveat emptor ("buyer beware"). There is no general duty to disclose information, and silence does not amount to a misrepresentation (Fletcher v Krell (1873)—a woman was not obliged to disclose that she had previously been married when applying for a governess job).
However, there are four key exceptions where silence or non-disclosure IS actionable:
1. Half-Truths: Saying something that is literally true but conveys a completely misleading impression because vital context is omitted.
Dimmock v Hallett (1866): A seller accurately stated that farms on an estate were fully let, but omitted to mention that the tenants had already given notice to quit.
2. Change of Circumstances: A statement that is true when made becomes false before the contract is finalized. You have a positive duty to disclose the change.
With v O'Flanagan (1936): A doctor truthfully stated the medical practice's revenue during negotiations. By the time the contract was signed, the doctor had fallen ill and the revenue had collapsed to almost nothing. Failing to disclose the change was an actionable misrepresentation.
3. Contracts of Utmost Good Faith (uberrimae fidei): Contracts where one party must disclose all material facts (e.g., insurance contracts).
4. Fiduciary or Confidential Relationships: Relationships based on special trust and confidence (e.g., solicitor and client).
Element 3: The Statement Must Induce the Contract (Reliance)
The false statement must have been a material factor in persuading the innocent party to enter into the contract (JEB Fasteners Ltd v Marks Bloom & Co (1983)).
• No Reliance = No Misrepresentation: If the claimant conducts their own independent investigation and relies entirely on their own surveyor/expert rather than the seller's statement, there is no reliance.
Attwood v Small (1838): The buyers of a mine appointed their own surveyors to check the seller's claims. Because they relied on their own report rather than the seller's exaggerated figures, the misrepresentation claim failed.
2. The Three Types of Misrepresentation
Once you prove a misrepresentation exists, you must categorize it to work out the correct legal remedy:
Type 1: Fraudulent Misrepresentation
• Definition: A false statement made knowingly, without belief in its truth, or recklessly, careless whether it be true or false (Derry v Peek (1889)).
• Remedy: Rescission of the contract and damages in the tort of deceit (Doyle v Olby (Ironmongers) Ltd (1969)). In deceit, the claimant can recover all direct financial losses resulting from the transaction, even if those losses were not reasonably foreseeable.
Type 2: Negligent Misrepresentation
There are two ways to claim negligent misrepresentation:
1. Statutory under Section 2(1) Misrepresentation Act 1967 (Most Common):
The claimant only needs to prove the statement was false and induced the contract. The burden of proof then shifts to the defendant to prove they had reasonable grounds to believe, and did believe up to the time the contract was made, that the statement was true.
• Damages: Assessed under the "fiction of fraud" measure in tort (Royscot Trust Ltd v Rogerson (1991)), alongside rescission.
2. Common Law Negligent Misstatement:
Under Hedley Byrne & Co Ltd v Heller & Partners Ltd (1964), where a special relationship and a duty of care exist between the parties.
Type 3: Innocent Misrepresentation
• Definition: A false statement made by someone who had reasonable grounds to believe it was true and honestly believed it up to the moment the contract was signed.
• Remedy: Rescission; or the court may exercise its discretion to award damages in lieu of rescission under Section 2(2) Misrepresentation Act 1967.
3. Remedies and the Four "Bars to Rescission"
The primary equitable remedy for misrepresentation is rescission. Rescission sets the contract aside and restores both parties to the exact position they were in before the contract was made (restitutio in integrum).
However, rescission is an equitable remedy and can be lost if one of the four bars to rescission applies:
1. Affirmation: The innocent party discovers the misrepresentation but expressly agrees to carry on, or does an act implying they accept the contract.
Long v Lloyd (1958): The buyer of a lorry discovered defects. The seller offered to pay half the cost of repairs, which the buyer accepted. The buyer then took the lorry on another journey. This conduct was held to be an affirmation of the contract, losing the right to rescind.
2. Lapse of Time: An unreasonable delay in seeking the remedy will bar rescission.
Leaf v International Galleries (1950): Both parties believed a painting was by the famous artist Constable. Five years later, the buyer discovered it was not. The 5-year delay barred the right to rescind for innocent misrepresentation.
3. Impossibility of Restitution: Rescission is barred if the subject matter has been consumed, degraded, or altered so that it is impossible to return it in substantially its original state.
Clarke v Dickson (1858): The claimant bought shares in a mining partnership which was later converted into a limited liability company. Restitution was impossible because the nature of the shares had completely changed.
4. Third-Party Rights: If an innocent third party has acquired ownership or rights in the goods for value before the contract was rescinded, rescission is blocked (White v Garden (1851); Car and Universal Finance Co Ltd v Caldwell (1965)).
Quick Misrepresentation Summary:
• Elements: Unambiguous false statement + material fact/law + inducement.
• Three Types: Fraudulent (Derry v Peek), Negligent (s2(1) MA 1967 / Hedley Byrne), Innocent (honest & reasonable belief).
• Bars to Rescission: Affirmation, Lapse of time, Impossibility, Third-party rights.
Part 2: Economic Duress
1. What is Economic Duress?
In business, tough negotiations, aggressive bargaining, and commercial pressure are normal everyday occurrences. However, when pressure goes beyond normal commercial hardball and crosses into illegitimate coercion of a party's financial interests, the law calls this Economic Duress (first recognized in The Siboen and The Sibotre (1976)).
2. The Three Essential Requirements
Under the leading authorities of Pao On v Lau Yiu Long [1980] and Universe Tankships v ITWF [1983], three elements must be proved to establish economic duress:
Element 1: Illegitimate Pressure
The pressure must be distinguished from ordinary commercial bargaining. Threatening an unlawful act (such as threatening an unlawful breach of contract to extract more money when the other party is vulnerable) constitutes illegitimate pressure.
• Atlas Express Ltd v Kafco (1989): A carrier contracted to deliver basketware to Woolworths for a set price. Realizing they undercalculated the cost, the carrier sent an empty lorry to the supplier's warehouse and threatened not to deliver unless the supplier signed an agreement to pay a higher rate. Because missing the Woolworths delivery deadline would ruin the supplier's business, they signed under protest. This was held to be economic duress.
• North Ocean Shipping Co Ltd v Hyundai Construction Co Ltd [The Atlantic Baron] (1979): Shipbuilders threatened to break their contract to build a tanker unless the buyers agreed to pay an extra 10% following a currency devaluation. The threat was unlawful and constituted illegitimate pressure.
• Lawful Act Duress: Even if a threat involves a lawful act, it can still amount to illegitimate pressure if carried out in bad faith or unconscionably (Pakistan International Airline Corporation v Times Travel (UK) Ltd (2021)).
Element 2: Coercion of the Will / Lack of Practical Choice
The illegitimate pressure must leave the victim with no realistic or practical alternative but to agree to the demand.
In Pao On v Lau Yiu Long [1980], Lord Scarman set out guidelines to assess whether a party's will was coerced:
1. Did the person allegedly coerced protest at the time?
2. Did they have an available alternative course of action (such as an adequate legal remedy or another supplier)?
3. Were they independently advised (e.g. by a lawyer)?
4. Did they take prompt steps to avoid or set aside the contract after entering into it?
Element 3: Causation (Inducement)
The illegitimate pressure must be a significant cause or reason why the innocent party entered into or varied the contract (Barton v Armstrong (1976); Huyton SA v Peter Cremer GmbH & Co (1999)).
---3. Economic Duress and Consideration
A vital evaluative topic in AQA Paper 3 is the link between consideration and economic duress.
In contract renegotiations, a promise to pay more money for existing duties can provide valid consideration if the promisor obtains a "practical benefit" (Williams v Roffey Bros & Nicholls (Contractors) Ltd (1991)). However, the court in Williams v Roffey explicitly emphasized that this rule only applies in the absence of economic duress or fraud.
If party A promises extra money because party B exerted illegitimate commercial pressure, the variation is invalid due to economic duress.
4. Remedy for Economic Duress
• Effect: The resulting contract or variation is voidable (NOT void).
• Primary Remedy: Rescission (recovering the extra money paid or setting aside the variation).
• Loss of Remedy: Just like misrepresentation, rescission can be lost through affirmation or unreasonable delay.
The Atlantic Baron (1979): Although the shipbuilders had exerted economic duress, the buyers waited eight months after the delivery of the ship before claiming back the extra 10%. This unexplained delay amounted to an affirmation of the contract, meaning they lost the right to rescind.
Quick Economic Duress Summary:
• Core Test: Illegitimate pressure + No realistic practical choice (Pao On factors) + Causation.
• Remedy: Voidable contract \(\rightarrow\) Rescission.
• Watch out for: Affirmation / Delay (The Atlantic Baron).
Part 3: Top Pitfalls & Exam Checklist
Keep these common examiner warnings in mind when tackling scenario questions in Paper 3:
1. Never call a vitiated contract "void"
Contracts affected by misrepresentation or economic duress are voidable. Stating that the contract is "void" is a classic error that loses marks!
2. Section 2(1) Misrepresentation Act 1967 shifts the burden of proof
Remember: under s2(1), the innocent party only proves the statement was false. It is up to the defendant to prove they had reasonable grounds to believe the statement was true.
3. Distinguish tough commercial bargaining from duress
Hard bargaining is legitimate in business. To prove economic duress, you must show illegitimate pressure (e.g. an unlawful threat to breach without justification) and a total lack of practical choice (Atlas Express v Kafco).
4. Check for Bars to Rescission
Always check the timeline in the scenario! If the claimant continued using the goods (Long v Lloyd) or waited months before taking action (The Atlantic Baron, Leaf), they may have affirmed the contract and lost their right to rescind.