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Civil Partnership UK: Who Can Form One and How Dissolution Differs From Divorce

Independently fact-checkedBy Recording Law Editorial Team8 min read

Independently fact-checked against primary sources (last audited September 28, 2026). · 13 primary sources cited on this page. How we verify our legal content

Civil Partnership UK: Who Can Form One and How Dissolution Differs From Divorce

A civil partnership is a legally registered relationship, open to both same-sex and opposite-sex couples in every part of the UK, that carries most of the same legal consequences as marriage but ends by 'dissolution' rather than divorce.

Who can form a civil partnership

Section 3 of the Civil Partnership Act 2004 sets the eligibility rules in England and Wales. Two people cannot register a civil partnership if either of them is already a civil partner or lawfully married, if either of them is under 18, if they are within the prohibited degrees of relationship to each other, or if either is serving a whole life order, unless the Secretary of State gives permission (legislation.gov.uk: Civil Partnership Act 2004, section 3). Since 2 December 2019, this no longer depends on the couple's sex: the earlier restriction limiting civil partnership to same-sex couples was removed from the Act on that date, opening it to opposite-sex couples in England and Wales as well. In Scotland and Northern Ireland the minimum age is 16 (sections 86 and 138 of the 2004 Act; legislation.gov.uk: Civil Partnership Act 2004, section 138). A Marriage and Civil Partnership Bill to raise the Northern Ireland minimum to 18 was introduced in the Assembly on 16 March 2026; as of 28 September 2026 it had passed its Second Stage but had not become law, so check its progress before relying on the Northern Ireland age of 16 (Northern Ireland Assembly: Marriage and Civil Partnership Bill).

A civil partnership can come about in a number of ways: by registering in England and Wales, Scotland or Northern Ireland, by registering outside the UK under an Order in Council, by having certain overseas registered relationships recognised as civil partnerships, or, in Northern Ireland only, by converting an existing marriage into a civil partnership under the Marriage and Civil Partnership (Northern Ireland) (No. 2) Regulations 2020 (legislation.gov.uk: Civil Partnership Act 2004, section 1).

Nation by nation: three different start dates for opposite-sex couples

Same-sex couples have been able to form a civil partnership across the whole UK since the 2004 Act came into force. Opposite-sex couples gained the same right in three separate stages, on three different dates:

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NationIn force fromInstrument
England and Wales2 December 2019Civil Partnership (Opposite-sex Couples) Regulations 2019, S.I. 2019/1458
Northern Ireland13 January 2020Marriage (Same-sex Couples) and Civil Partnership (Opposite-sex Couples) (Northern Ireland) Regulations 2019, S.I. 2019/1514
Scotland1 June 2021 (earlier commencement on 1 February 2021 covered only different-sex civil partnerships formed outside Scotland)Civil Partnership (Scotland) Act 2020, commenced by S.S.I. 2020/414 and S.S.I. 2021/23

Sources confirm each date directly: England and Wales's regulations came into force "on the later of 2nd December 2019 and the day after the day on which they are made" (legislation.gov.uk: S.I. 2019/1458, regulation 1); Northern Ireland's came into force "on 13th January 2020" (legislation.gov.uk: S.I. 2019/1514, regulation 1); and Scotland's Act let different-sex couples register there from 1 June 2021, after a limited commencement on 1 February 2021 for civil partnerships formed elsewhere (legislation.gov.uk: Civil Partnership (Scotland) Act 2020, section 1).

Northern Ireland's reform is worth noting on its own terms: the same 2019 regulations that opened civil partnership to opposite-sex couples there also introduced same-sex marriage in Northern Ireland for the first time, both delivered through Westminster legislation passed while the Northern Ireland Assembly was suspended. England and Wales and Scotland had each introduced same-sex marriage through separate Acts years earlier, so Northern Ireland is the only nation where both reforms landed on the same date.

How a civil partnership ends: dissolution, not divorce

A civil partnership ends in one of four ways under the 2004 Act: the death of one partner, dissolution, annulment, or by converting the civil partnership into a marriage.

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In England and Wales, since the Divorce, Dissolution and Separation Act 2020, ending a civil partnership works on the same no-fault basis as ending a marriage. The Act amends the Matrimonial Causes Act 1973 to remove the need to establish a reason for divorce, and separately amends the Civil Partnership Act 2004 to remove the equivalent requirement for dissolution, so both processes now run on the same footing. The terminology stays distinct throughout: a civil partnership ends by a "dissolution order," never a divorce, even though the underlying process and its no-fault basis are now the same. The 2020 Act does not apply in Scotland or Northern Ireland, where dissolution still requires irretrievable breakdown shown by one of the statutory facts, such as behaviour or a period of separation (legislation.gov.uk: Divorce, Dissolution and Separation Act 2020, section 7 (extent)).

For ending a marriage, see no-fault divorce, the divorce process and, for Scotland specifically, divorce in Scotland. For the money side of separating, see financial settlement. If you are not married or in a civil partnership at all, see the common law marriage myth and cohabitation rights. For the full list of family law topics, see the UK family law hub.

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Frequently Asked Questions

Can opposite-sex couples form a civil partnership in the UK?

Yes, across the whole of the UK, though the right arrived on different dates by nation: England and Wales from 2 December 2019, Northern Ireland from 13 January 2020, and Scotland from 1 June 2021.

Who cannot form a civil partnership?

Two people cannot register a civil partnership if either of them is already a civil partner or lawfully married, if either of them is under the minimum age (18 in England and Wales, 16 in Scotland and Northern Ireland), or if they are within the prohibited degrees of relationship to each other. In England and Wales, a person serving a whole life order also needs the Secretary of State's permission.

How does ending a civil partnership differ from divorce?

In England and Wales the process is now the same no-fault process as divorce, since the 2020 reform; the terminology stays separate: a civil partnership ends by a dissolution order, not a divorce order. Scotland and Northern Ireland still require one of the statutory grounds.

Did Northern Ireland get same-sex marriage and opposite-sex civil partnership at the same time?

Yes. The same 2019 regulations that opened civil partnership to opposite-sex couples in Northern Ireland also introduced same-sex marriage there, both through Westminster legislation. England and Wales and Scotland had introduced same-sex marriage through separate Acts years earlier.

Can I convert my civil partnership into a marriage, or my marriage into a civil partnership?

Converting a marriage into a civil partnership is possible only in Northern Ireland, under 2020 regulations. Converting a civil partnership into a marriage is possible in England and Wales only for same-sex couples (Marriage (Same Sex Couples) Act 2013, section 9), and there are separate routes in Scotland and Northern Ireland. A conversion into a marriage is one of the four ways a civil partnership can end, alongside death, dissolution and annulment.

Updates

Independently fact-checked against the cited primary sources

Sources and References

  1. Civil Partnership Act 2004, section 1 (civil partnership)(legislation.gov.uk).gov
  2. Civil Partnership Act 2004, section 3 (eligibility)(legislation.gov.uk).gov
  3. Civil Partnership (Opposite-sex Couples) Regulations 2019, S.I. 2019/1458, regulation 1(legislation.gov.uk).gov
  4. Marriage (Same-sex Couples) and Civil Partnership (Opposite-sex Couples) (Northern Ireland) Regulations 2019, S.I. 2019/1514, regulation 1(legislation.gov.uk).gov
  5. Civil Partnership (Scotland) Act 2020, section 1 (different sex civil partnerships)(legislation.gov.uk).gov
  6. Divorce, Dissolution and Separation Act 2020, contents(legislation.gov.uk).gov
  7. Civil Partnership Act 2004, section 86 (eligibility, Scotland)(legislation.gov.uk).gov
  8. Civil Partnership Act 2004, section 138 (eligibility, Northern Ireland)(legislation.gov.uk).gov
  9. Marriage (Same Sex Couples) Act 2013, section 9 (conversion of civil partnership into marriage)(legislation.gov.uk).gov
  10. Divorce, Dissolution and Separation Act 2020, section 7 (extent)(legislation.gov.uk).gov
  11. Civil Partnership Act 2004, section 117 (dissolution, Scotland)(legislation.gov.uk).gov
  12. Department of Finance NI: minimum age of marriage and civil partnership Bill introduced (19 March 2026)(finance-ni.gov.uk).gov
  13. Northern Ireland Assembly: Marriage and Civil Partnership Bill (NIA Bill 30/22-27)(niassembly.gov.uk).gov
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