Fornication and UK law: from church courts to legal silence

Is fornication a crime anywhere in the UK today?

No: none of the three legal systems of the United Kingdom, namely England and Wales, Scotland and Northern Ireland, makes sex between two consenting unmarried adults an offence. The word "fornication" does not appear as an offence in the modern sexual offences legislation of any of them. What the law now asks is whether the people involved agreed, whether they had the capacity to agree, and whether they were old enough.

The clearest statement of that approach is in the Sexual Offences Act 2003, which applies to England and Wales. Part 1 of the Act is organised around rape, assault, child sex offences, abuse of positions of trust, offences against people with a mental disorder, prostitution, trafficking and preparatory offences ^[1]. Marital status is not an element of the main offences. It appears only in narrow exceptions: under section 23, for example, conduct that would otherwise be an abuse of a position of trust is not an offence if the young person is 16 or over and the two are lawfully married or civil partners ^[15]. Sections 28 and 43 contain similar exceptions for spouses and civil partners ^[1]. Section 74 defines consent in a single sentence: a person consents if he or she "agrees by choice" and has the freedom and capacity to make that choice ^[5].

It has not always been so. For several centuries, sex outside marriage was treated as a moral and religious wrong policed by the church, and for a few years in the seventeenth century by the state as well. The sections below follow that history, then describe what criminal law covers instead and how the three jurisdictions differ.

This page describes the law as a matter of public information. It is not legal advice, and the position in each jurisdiction can change by statute.

Timeline

1. 15 Dec 1567The Scottish Parliament passes an act against fornication with fines and public shaming; a royal letter of 1594-95 to Glasgow relies on it [11].
2. 10 May 1650The Commonwealth's Act punishes fornication with three months in gaol and makes adultery a capital felony [3].
3. After 1660The 1650 Act is not renewed; fornication is left to the spiritual court, as Blackstone later records [2].
4. 1855The Ecclesiastical Courts Act 1855 ends the church courts' defamation jurisdiction, one of the last traces of their moral policing [9].
5. 1857Matrimonial Causes Act 1857: matrimonial jurisdiction passes from the church courts to the new Divorce Court [9][20].
6. 1885The Criminal Law Amendment Act, passed on 14 August, raises the age of consent from 13 to 16 [16].
7. 2003The Sexual Offences Act 2003 defines consent and child sex offences for England and Wales without reference to marriage [1][5].
8. 2009Northern Ireland's age of consent falls from 17 to 16 when the 2008 Order takes effect on 2 February; Scotland's Sexual Offences Act 2009 is enacted the same year [18][8].

When was fornication punished in England?

In England, fornication was punished mainly by the church courts from the Middle Ages until the late seventeenth century, with one short-lived criminal statute in 1650. The courts of the archdeacon and the bishop, known as consistory courts, had wide authority over the morals of the laity as well as the clergy. Encyclopaedic accounts record that they prosecuted fornication among other offences, and that lesser sins were often met with public penance ^[10].

Penance meant a visible humiliation rather than a fine or prison: standing in church in a white sheet, confessing before the congregation, or paying a sum to the poor. Historians of the period have found that sexual cases were a staple of this system. In her study of church courts between 1570 and 1640, Martin Ingram describes prosecutions for the main sexual sins continuing under Elizabeth I and the early Stuarts with substantial local support, peaking in the reign of James I before falling in the two decades before the Civil War ^[13].

The Civil War changed the setting. On 10 May 1650 the Commonwealth Parliament passed an act "for suppressing the detestable sins of incest, adultery and fornication", in force from 24 June 1650 ^[3]. It made adultery by a married woman a felony without benefit of clergy, so that both she and her partner faced death, though a man who did not know the woman was married was exempt. Fornication, by contrast, was punished far more lightly: a man who had intercourse with an unmarried woman or widow, and the woman herself, were committed to the common gaol for three months without bail and then bound over to good behaviour for a year ^[3].

Prosecution under the 1650 Act had to begin within twelve months of the offence, and a confession counted as evidence only against the person who made it ^[3]. The Act was a creature of the Commonwealth. After the Restoration of 1660 it was not renewed, and fornication went back to the jurisdiction of the church ^[2]. A fuller account of the statute is on the page about the Adultery Act of 1650.

The church courts themselves declined slowly. Reference works note that their activity was much reduced after 1688 ^[10], and one summary of the consistory courts says that by the end of the eighteenth century their control over the laity in moral matters "had fallen into desuetude" ^[9]. The nineteenth century then removed what was left: defamation jurisdiction ended with the Ecclesiastical Courts Act 1855, and matrimonial cases passed to the new Divorce Court under the Matrimonial Causes Act 1857 ^[9][20].

What did Blackstone say about fornication?

William Blackstone, writing in the 1760s, described fornication as an offence that English law left to the "feeble coercion of the spiritual court." His Commentaries on the Laws of England appeared in four volumes between 1765 and 1769, and Britannica calls the work the best-known description of the doctrines of English law ^[14]. Book IV, chapter 4, "Of Offences Against God and Religion", deals with lewdness and incontinence.

Blackstone's argument was that the common-law courts had little interest in these matters. They took no notice of adultery, he wrote, except as a private injury to the husband. Open lewdness, such as keeping a house of ill fame or a grossly scandalous public indecency, could be indicted and punished by fine and imprisonment, but private incontinence between consenting people was not a temporal crime ^[2]. He added that canon law itself treated incontinence, even adultery, with "tenderness and lenity", a leniency he suggested might owe something to the celibacy of its first compilers ^[2].

His remarks on 1650 are worth reading with the statute beside them. Blackstone says that in 1650 incest and adultery were made capital and that "the repeated act" of keeping a brothel or committing fornication became felony without benefit of clergy, and that after the Restoration these laws were dropped as an "unfashionable rigour" ^[2]. The text of the Act as printed in the Interregnum collection sets three months in gaol for fornication, with no separate penalty for a repeat offence, and reserves the death penalty for a second conviction of keeping a brothel or being a common bawd ^[3]. Blackstone's phrase therefore seems to compress the brothel-keeping clause. The point for modern readers is the same either way: the severe regime did not survive 1660. A fuller discussion is on the page about what Blackstone's Commentaries say about fornication.

What do modern sexual offences laws cover instead?

Modern UK law replaces the question "were they married?" with three others: was there consent, did the person have capacity, and was anyone under the age of consent? In England and Wales, the 2003 Act answers them in Part 1. Sections 5 to 8 cover rape and other offences against children under 13, and sections 9 to 15 cover child sex offences, including sexual activity with a child under 16 ^[1].

Section 9 is the best-known provision for under-16s. It applies where a person aged 18 or over intentionally touches another person sexually and the other person is under 16 and not reasonably believed to be 16 or over, or is under 13. Where the touching involves certain forms of penetration, the maximum sentence on indictment is 14 years' imprisonment; for the rest, the maximum is six months on summary conviction or 14 years on indictment ^[4]. For children under 13, the belief of the offender about age makes no difference ^[4].

Sections 16 to 24 deal with abuse of a position of trust, which can reach conduct with 16- and 17-year-olds when an adult in authority, such as a teacher, is involved ^[1]. Sections 74 to 77 set out how consent is defined and when it is presumed absent, for example when the person was asleep or affected by drink or drugs ^[1][5]. Public-sector advice in Scotland makes the same point in plain language: consent must be mutual, can be withdrawn, and cannot be given by someone who is asleep, unconscious or affected by alcohol or drugs ^[7].

The age of consent is 16 across the United Kingdom, although each nation legislates for itself ^[6]. The Criminal Law Amendment Act 1885, passed on 14 August 1885, raised it from 13 to 16 ^[16]. Northern Ireland's age was 17 until the Sexual Offences (Northern Ireland) Order 2008 lowered it to 16, with effect from 2 February 2009 ^[18]. A separate page covers the age of consent in UK law.

Do Scotland and Northern Ireland have different rules?

Scotland and Northern Ireland have their own sexual offences statutes, but all three jurisdictions reach the same result on fornication: adult sex between unmarried people is lawful. England and Wales are governed by the Sexual Offences Act 2003. Scotland has the Sexual Offences (Scotland) Act 2009, and Northern Ireland the Sexual Offences (Northern Ireland) Order 2008 ^[6].

The Scottish Act has a notable feature. Section 28 creates the offence of "having intercourse with an older child": a person aged 16 or over commits it if they penetrate the vagina, anus or mouth of a child aged 13 or over but under 16, intending or reckless as to the penetration ^[8]. The Scottish Government's own guidance for people working with young people explains that when both people are aged 13 to 15 the law treats both as acting unlawfully, while stressing that responses should be proportionate and that not every case raises child protection concerns ^[7]. The Scottish approach to young people of similar age therefore differs in structure from the English one, even though the age line is the same.

Scotland also has the longest record of civil enforcement of sexual morality. A royal letter of 1594-95 appointing Glasgow's magistrates and kirk session as judges in cases of fornication relies on an act of the Scottish Parliament of 15 December 1567 and sets escalating penalties: a £40 fine or eight days' imprisonment for a first offence, with public display in the market place, and for repeat offences a fine of 100 merks or longer imprisonment, with heads shaved ^[11]. Kirk sessions, which were the church's local courts, disciplined what they called antenuptial fornication through rebukes, fines, the stool of repentance and in the last resort excommunication, although they could not try criminal matters ^[12]. The sources consulted do not give the date on which these penalties were formally repealed. What is certain is that no such offence exists in Scots law today.

Northern Ireland's 2008 Order follows the English model closely. Article 16 makes it an offence for a person aged 18 or over to touch a child under 16 sexually without reasonably believing the child to be 16 or over, or to touch a child under 13 ^[17]. Readers who need other provisions should consult the text on legislation.gov.uk directly.

Can adultery or cohabitation still have legal consequences?

Adultery and unmarried cohabitation are not crimes in the UK, but they can still matter in civil law. The most visible example is divorce. For many years adultery was one of the facts a spouse could rely on in England and Wales to show that a marriage had broken down. Since 6 April 2022 the Divorce, Dissolution and Separation Act 2020 has replaced those facts with a statement of irretrievable breakdown, so adultery no longer has to be alleged ^[19]. In Scotland adultery remains one of the ways of showing breakdown under the Divorce (Scotland) Act 1976.

Older civil remedies have been removed. The action for criminal conversation, a husband's damages claim against his wife's lover, was abolished in 1857, although a limited right to damages in divorce proceedings survived until the Law Reform (Miscellaneous Provisions) Act 1970. That Act, in force from 1 January 1971, also abolished the claim for breach of a promise to marry in England and Wales. The page on breach of promise and heart balm actions tells that story.

Cohabitation raises a different set of questions. Living together without marriage creates no automatic financial rights in England and Wales, whatever the length of the relationship, while Scotland gives cohabitants limited claims under the Family Law (Scotland) Act 2006. These rules are the subject of separate pages in this section.

One caution applies to everything above. Criminal law has not been tied to marital status for generations, but religious bodies, employers or landlords may still apply their own rules in private settings. Those rules are not state law, and they do not make the conduct itself an offence.

Frequently asked questions

When did fornication stop being punished in England?

It stopped being punished by the state in 1660, when the Commonwealth's 1650 Act was not renewed at the Restoration, and it faded as a church-court matter over the next two centuries. Reference works date a sharp fall in church-court activity to after 1688, and the courts lost their remaining defamation and matrimonial jurisdiction in 1855 and 1857.

Is adultery illegal in the UK?

No. Adultery is not a crime in any part of the United Kingdom. It has only civil consequences, mainly in divorce law, where in England and Wales it no longer has to be alleged since the no-fault reform in force from 6 April 2022, whereas Scots divorce law still lists it as a ground.

Was fornication ever punished in Scotland?

Yes. A Scottish parliamentary act of 1567 punished fornication with fines, imprisonment and public shaming, and kirk sessions disciplined it through rebukes, fines and the stool of repentance. The exact date on which these penalties were formally repealed was not verified, but the offence has no place in current Scots law.

What is the age of consent in the UK?

It is 16 in England, Wales, Scotland and Northern Ireland. England and Wales apply the Sexual Offences Act 2003, Scotland the Sexual Offences (Scotland) Act 2009, and Northern Ireland the Sexual Offences (Northern Ireland) Order 2008. Northern Ireland's age was 17 until the 2008 Order lowered it, with effect from 2 February 2009.

Did the 1650 Act make fornication a capital crime?

No. The Act of 10 May 1650 made adultery by a married woman and incest capital felonies, but it punished fornication with three months in gaol and a year's good behaviour. Blackstone later wrote that "the repeated act" of keeping a brothel or committing fornication was felony, but the printed text of the Act has no repeat-fornication clause and reserves death for a second offence of keeping a brothel.

Does marital status matter in modern UK sexual offences law?

Hardly. The Sexual Offences Act 2003 turns on consent, capacity and age, and section 74 defines consent without any reference to marriage. Marriage appears only in narrow exceptions, such as section 23 for positions of trust, and it matters mainly in other fields, such as divorce, property, inheritance and tax.