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Marital coercion

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Title: Marital coercion  
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Subject: Duress in English law, Murder in English law, English criminal law, Trading with the enemy, Intention in English law
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Marital coercion

Marital coercion was a defence to most crimes under English criminal law and under the criminal law of Northern Ireland. It is similar to duress. It was abolished in England and Wales by section 177 of the Anti-social Behaviour, Crime and Policing Act 2014, which came into force on 13 May 2014.[1]


What had remained of the original common law defence of marital coercion at the date of abolition was contained in section 47 of the Criminal Justice Act 1925:[2]

Section 37 of the Criminal Justice Act (Northern Ireland) 1945 (c.15) (N.I.) is identical to the section cited above and applies to Northern Ireland.

Differences from duress

While the defence of marital coercion has similarities to that of duress, it has significant differences:

  • It must be proved that the defendant is the legal wife of the man who coerced her. A mistaken though reasonable belief that she was married will not suffice.[3] Civil partnership does not suffice and a husband cannot claim marital coercion.
  • Until 2013 it was thought that the burden of proof lay on the defence to prove marital coercion on the balance of probabilities. (For duress, the burden is on the prosecution to disprove duress beyond reasonable doubt.) However in the trial of Vicky Pryce the trial judge, Mr Justice Sweeney, ruled that the defence had only to show some evidence that the defence applied in order to require the prosecution to disprove the defence beyond reasonable doubt, as in duress cases.[4][5]
  • Duress requires a threat to kill or cause serious harm to a person. The Court of Appeal held in R v Shortland [6] that marital coercion need not involve physical force or the threat of force. (However mere loyalty to her husband does not suffice.)
  • Section 47 requires the husband to be present when the offence is committed. The defence of duress does not require the presence of the person who issued the threat, provided that the threat is still effective.
  • Duress is not a defence to attempted murder, but attempted murder is not excluded by the text of section 47 from the scope of marital coercion.
  • Duress is a defence to some forms of treason,[7] but marital coercion is not.


In 1977, the Law Commission recommended that the defence of marital coercion should be abolished altogether. They said that they did not consider it to be appropriate to modern conditions.[8] However no action was taken until after Vicky Pryce advanced the defence of marital coercion at her 2013 trial for perverting the course of justice. She argued that she falsely accepted penalty points under the coercion of her former husband and Liberal Democrat Secretary of State for Energy and Climate Change Chris Huhne MP.[9][10] Her use of the defence was unsuccessful, and she was unanimously convicted on 7 March 2013.[11] In 2014, the government announced the defence would be abolished.[12]

Example from the 18th century

In 1732 at the Old Bailey Mary Day was acquitted of theft committed in obedience to her husband.[13]

Outside the United Kingdom

In the United States, the defense formerly existed in most jurisdictions. It has since been abolished in several states, including those adopting or influenced by the Model Penal Code, section 2.09(3) of which expressly ends the presumption and abolishes the defense.

In Ireland the case of State (DPP) v Walsh and Conneely in 1981 found that presumption of marital coercion had not survived the enactment of the 1937 Constitution and so the defence is no longer available there.

Paragraph 4 of Schedule 3 to the Crimes Act 1900 makes provision for New South Wales.

Further reading

  • Pace [1979] Crim LR 82 contains a discussion of the defence and arguments in favour of its retention.


  1. ^ Section 177 and section 185 of the 2014 Act.
  2. ^ c. 86 15 & 16 Geo. V
  3. ^ R v Ditta, Hussain and Kara [1988] Crim. L. R. 42, CA
  4. ^ The Guardian website
  5. ^ The ruling on Crimeline
  6. ^ [1996] 1 Cr. App. R. 116
  7. ^ Archbold 17-119
  8. ^ The Law Commission (1977) Defences of General Application (Law Com No.83).
  9. ^ R. Camber, "Chris Huhne forced me take his speeding points, says his ex-wife as she denies perverting the course of justice", The Daily Mail, (1 June 2012)
  10. ^ "Chris Huhne admits perverting the course of justice". BBC News. 4 February 2013. 
  11. ^ "Vicky Pryce guilty over Chris Huhne speeding points". BBC. 7 March 2013. Retrieved 7 March 2013. 
  12. ^ "'"Marital coercion defence 'to be scrapped. BBC News. 22 January 2014. 
  13. ^ "Mary Day, Theft > theft from a specified place, 14th January 1732". Old Bailey Online. 28 January 2014. Retrieved 28 January 2014. 
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