# Marriage, civil partnership, and cohabitation

> **Key takeaway:** Marriage/CP = formal status + MCA/CPA remedies on breakdown. Cohabitation ≠ marriage; use TOLATA/estoppel/Sch 1/CMS. No general common-law marriage in E&W. Check validity/formality early.

- **Jurisdiction:** England & Wales
- **Practice area:** Family
- **Last reviewed:** 2026-08-04
- **Interactive page:** https://kttclegal.info/library/notes/Family/marriage-civil-partnership-cohabitation
- **Keywords:** marriage, civil partnership, cohabitation, common law marriage, void marriage, Civil Partnership Act 2004, TOLATA, Schedule 1

## What is this about?

English law recognises marriage and civil partnership as formal statuses with extensive statutory consequences. Cohabitation, by contrast, creates no general marriage-equivalent status: rights are piecemeal (property, children, limited statutes), which remains a frequent client misconception.

## What is the core rule?

Marriage is a voluntary union created by a valid ceremony meeting formal and capacity requirements (Marriage Acts framework; void/voidable grounds under MCA 1973). Civil partnership (Civil Partnership Act 2004, expanded to opposite-sex couples) is a parallel formal status. Both attract financial remedy jurisdiction on breakdown and recognition rules. Cohabitants do not acquire automatic property adjustment on separation akin to MCA 1973; claims typically run through trusts of land/TOLATA, proprietary estoppel, child maintenance (CMS/Schedule 1 CA 1989), and any express agreements.

## What are the elements or test?

1. Is there a valid marriage or CP, overseas recognition issue, or cohabitation only?
2. Capacity and formality for marriage/CP; any void/voidable argument?
3. On breakdown: divorce/dissolution vs cohabitant property routes?
4. Children: PR and Schedule 1/CAO issues regardless of adult status
5. Any cohabitation contract / declaration of trust?

## Which authorities matter?

- **Matrimonial Causes Act 1973 (void/voidable marriage; financial remedies gateway)** — Core statute for marriage validity categories and divorce finance.
- **Civil Partnership Act 2004 (as amended)** — Civil partnership formation and consequences.
- **Stack v Dowden [2007] UKHL 17; Jones v Kernott [2011] UKSC 53** — Cohabitant beneficial ownership of the family home — see family-home trusts note.
- **Children Act 1989, Sch 1** — Financial provision for children of unmarried parents.

## How does this apply in practice?

Forced marriage and sham marriage engage criminal/immigration overlays. Religious-only ceremonies may not create a valid marriage — fact-sensitive. Always dispel 'common-law marriage' myths for cohabitants in E&W.

## What are common pitfalls?

- Advising cohabitants as if MCA 1973 sharing applies automatically
- Missing overseas marriage recognition issues
- Ignoring express declarations of trust on co-owned homes
- Conflating civil partnership with cohabitation

## When would a practitioner use this?

First interview diagnosis of relationship status and available remedy menus.

## Quick reference

Marriage/CP = formal status + MCA/CPA remedies on breakdown. Cohabitation ≠ marriage; use TOLATA/estoppel/Sch 1/CMS. No general common-law marriage in E&W. Check validity/formality early.

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*Reference material from [KTTC Legal](https://kttclegal.info/), not legal advice. Work product supports instructing solicitors and barristers under their supervision. England & Wales.*