Mistakes in English law

Mistake is a term of art in both contract law and criminal law in England and Wales.

Contract law

Mistakes are a group of rules in English contract law, which happen to share the same name. If the law deems a mistake to be sufficiently grave, then a contract entered into on the grounds of the mistake may be void. A mistake is an incorrect understanding by one or more parties to a contract. There are essentially three types of mistakes in contract,

Common mistake

Res Sua, where the subject matter already belongs to oneself

Res Extincta, where subject matter does not exist

Mutual mistake

Unilateral mistake to identity

Mistake as to identity occurs when one party - usually fraudulently - believes themselves to be bargaining with another, uninvolved, third party. In a typical situation of this kind, the contract will either be void for mistake, or voidable for fraud. Such a distinction depends on the manner in which the contract was made. Cundy v Lindsay[5] demonstrates this principle; here, a firm contracted by post to sell handkerchiefs to a rogue, masquerading as a legitimate company, Blenkiron & Co. The contract was held to be void for mistake: Lindsay & Co were able to recover the goods from a third party who had purchased them from the rogue (as the rogue did not have good title (property) to pass on to them). This can be contrasted with the case of King's Norton Metal Co v Edridge Merrett & Co,[6] where a similar situation occurred. Here however, the company name that the rogue used did not exist; as in Cundy v Lindsay, Kings Norton Metal Co could not claim they relied upon the false company name to contract. Therefore the contract was merely voidable for fraud, and the third party obtained good title to the goods.

A further distinction which can be drawn is where a contract is made face to face; that is, generally, in shops and markets. Where a contract is concluded this way, there is a strong presumption inferred by the courts that the seller intends to contract with the person in front of them. Thus in this situation it is much harder for the seller to claim a contract is void for mistake to identity. The principle is well demonstrated in the famous case of Phillips v Brooks.[7] However, the law becomes somewhat convoluted and less certain when considering subsequent decisions, such as Ingram v Little.[8] The principle has recently been upheld (albeit by a small margin of 3 to 2) in the House of Lords decision of Shogun Finance Ltd v Hudson,[9] despite persuasive reasoning to abandon it. The current situation can be seen as less than ideal, as it is the third party buyer who loses out when contracts are considered void for mistake to identity. In Shogun Finance Ltd v Hudson the minority of Lord Nicholls and Lord Millett argued strongly that all mistakes for identity merely render a contract voidable.

Unilateral mistake as to terms

Non Est Factum

Rectification

Criminal law

Mistake of fact

Mistake of fact may be a defence in criminal law if is genuine, whether or not it is reasonable.

In DPP v Morgan[10] an RAF man told three officers to have sex with his wife, and she would pretend to refuse just to be stimulating. They pleaded mistake, and the jury did not believe them.

R v Williams (Gladstone) established the principle that a belief (that a certain set of facts are true) need not be reasonable to operate under the defence of mistake. However, the reasonableness of that belief is material in deciding whether the defendant actually had that belief.[11]

An exception to this appears to be bigamy (see R v Tolson (1889) 23 QBD 168).

The Sexual Offences Act 2003 has introduced a hybrid test of reasonable belief as to consent. The defendant must now be seen to have taken steps to ascertain clearly whether the "victim" was consenting in all the circumstances. This abolishes the defence of a genuine though unreasonably mistaken belief as to the consent.

Mistake of law

Mistakes about the criminal law

It is not a defence that the defendant held an honest and reasonable belief that what he was doing was not criminal.[12] Where the defendant is a foreigner, and the offence is not criminal in his own country, the fact of such a belief is still not a defence.[13] It is not a defence that the defendant believed that he would not be prosecuted for what he was doing.[14]

Offences created by statutory instruments

Section 3(2) of the Statutory Instruments Act 1946 provides:

In any proceedings against any person for an offence consisting of a contravention of any such statutory instrument, it shall be a defence to prove that the instrument had not been issued by [or under the authority of] His Majesty’s Stationery Office at the date of the alleged contravention unless it is proved that at that date reasonable steps had been taken for the purpose of bringing the purport of the instrument to the notice of the public, or of persons likely to be affected by it, or of the person charged.

(Words in brackets inserted by section 1(1)(a) of the Statutory Instruments (Production and Sale) Act 1996, as read with section 1(2))

Mistakes about the civil law

A mistake about the civil law may have the effect of negativing the mens rea for an offence. See:

See also

Notes

  1. Smith v Hughes [1871]
  2. Lewis v Averay [1971] 3 All ER 907
  3. Raffles v Wichelhaus (1864) 2 Hurl. & C. 906.
  4. Bell v Lever Brothers Ltd [1931] All ER 1, [1932] AC 161
  5. [1878] 3 App Cas 459
  6. (1897) 14 TLR 98
  7. [1919] 2 KB 243
  8. [1961] 1 QB 31
  9. [2004] 1 AC 919
  10. [1976] AC 182, [1975] 2 WLR 913, [1975] 2 All ER 347, 61 Cr App R 136, [1975] Crim LR 717, HL
  11. R v Williams (Gladstone), (1983) 78 Cr App R 276, [1984] Crim LR 163, CA (28 November 1983)
  12. Johnson v Youden [1950] 1 KB 544 at 546, [1950] 1 All ER 300, 66 TLR, (Pt. I), 395, DC
  13. R v Esop (1836) 7 C & P 456, (1836) 173 ER 203; R v Barronet and Allain (1852) Dears 51, (1852) 169 ER 633, (1852) 1 E & B 1, (1852) 118 ER 337, (1852) 22 LJMC 25, (1852) 17 Jur. 184
  14. R v Arrowsmith [1975] QB 678, 60 Cr App R 211, [1975] 2 WLR 484, [1975] 1 All ER 463, [1975] Crim LR 161, CA

References