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12. Illegal contracts

Crimes, public policy, and the limits of ex turpi causa

Posted By lanbuk.com

In simple terms

No action arises from a base cause. If the contract itself is illegal, the court will not enforce it, and it will not usually help either party to get their money back. There are real exceptions, including two Sierra Leone cases.

A contract is illegal if the law forbids making it, or if it is against public policy. The cases group as follows.

A contract to commit a crime, or whose is a crime or a , is illegal. So is an agreement to stifle a prosecution for a serious offence. Bigos v Boustead: a contract to supply Italian currency in breach of the Exchange Control Act 1947 could not be enforced, and the share certificate deposited as security stayed where the illegality put it.

A contract illegal as formed, for example because a required licence was never taken out, is void from the start. Nobody acquires rights under it, whether or not they meant to break the law. Bostel Brothers v Hurlock treated a contract made in breach of building licensing rules as illegal.

Sierra Leone illustrations

Beckley v Evans, a 1963 case stated by the magistrate for the High Court, concerned an agreement not to report a road accident, contrary to section 7 of the Road Traffic Act, in return for payment for repairs. The court asked whether the statute was only a revenue or was for the protection of the public. It was for the public. A contract to avoid it was illegal and void, and no action lay on it. Having bought off a police report, a party could not then sue on the original claim either.

Habib v Attorney-General concerned a licensed diamond dealer who handed his licence and stones to an unlicensed brother-in-law to sell them in Kenema. The Alluvial Diamond Mining Ordinance did not allow a dealer's servant to deal. The court would not help the dealer recover the stones. They were forfeited.

Other ways a term gets in

Contracts to defraud the revenue are illegal. Miller v Karlinski built income tax into an expenses claim. Napier v National Business Agency paid a round sum "for expenses" that both sides knew was salary. The illegal expenses term tainted the whole employment contract, so arrears of salary could not be recovered either.

Sexual immorality: Pearce v Brooks, the brougham hired to a prostitute for use in her trade, where the coachbuilders knew the purpose. Corruption in public life: Parkinson v College of Ambulance, money paid on a promise that a knighthood could be arranged. The donor could not recover it. Interfering with justice: Keir v Leeman, a compromise of a prosecution for riot, which was a matter of public concern and could not be bought off. A purely private , where the victim may choose a civil or a criminal remedy, can be compromised. McGregor, the cross- case, draws that distinction.

Contracts in restraint of trade, which the outline lists separately, are void unless the restriction is reasonable between the parties and reasonable in the public interest. The rule belongs with public policy.

Consequences and exceptions

The general rule is . No action lies to recover money paid or property handed over. No action lies for breach. The court will not cut the illegal part out and enforce the rest if the illegality taints the whole, as in Napier. A collateral contract, such as a promissory note given for an illegal debt, is tainted too. A later lender is caught only if they knew what the money was for.

The exceptions are these. Where the parties are not equally at fault, the less guilty may recover. That covers a statute passed to protect a class of which the claimant is a member, and a person tricked into the illegal contract. Hughes v Liverpool Victoria Legal Friendly Society: premiums on an illegal life policy, induced by the agent's fraud, were recoverable. Where a party truly repents before any substantial part of the illegal purpose is carried out, they may withdraw and recover. Bigos shows that convenience is not repentance. Where the contract looks lawful and only one party knows of the illegal purpose, the innocent party may recover. Pearce v Brooks is the contrast: both knew. And a party who can frame the claim without relying on the illegal contract may succeed. Bowmakers v Barnet Instruments: the owners sued in for their own goods. They did not need to lean on the illegal hire-purchase agreements.

Words and Latin in this note

Ex turpi causa
'No action arises from a disgraceful cause.' The court will not help a person enforce a contract that is illegal.
Consideration
The price of a promise: something of value given, or promised, in return. A bare promise to make a gift has none. Open the note.

Memory map

Illegal contracts

Key points

  • An illegal contract gives neither side an…
  • Beckley v Evans and Habib v Attorney-General…
  • Recovery is possible where the claimant is the…

Cases

  • Bigos v Boustead
  • Beckley v Evans
  • Habib v Attorney-General
  • Napier v National Business Agency

Key terms

  • Consideration
  • Ex turpi causa
  • Tort
  • Assault

Take-home points

  • An illegal contract gives neither side an action on it, and money paid usually stays paid.
  • Beckley v Evans and Habib v Attorney-General are the Sierra Leone cases on statutory illegality and public protection.
  • Recovery is possible where the claimant is the person the statute protects, was deceived, truly repents in time, did not know of the illegal purpose, or can sue without relying on the contract.

Cases in this topic

Related case law

Full judgments on Lanbuk on the same areas of law.

See also

Other law notes by subject

For study only. By lanbuk.com. Always check current sources and consult a qualified professional.

Cite this page

'Illegal contracts, Lanbuk on the Law of Contract' (Lanbuk) <https://www.lanbuk.com/llb/contract/illegality> accessed 31 October 2026

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