Common Law Marriage in the UK: Why It Doesn't Exist and What to Do Instead

There is perhaps no more dangerous myth in English law than the concept of the common law spouse. It is believed by millions. It is taught by cultural osmosis, passed between generations as received wisdom, and assumed by couples who have lived together for decades. And it is completely, categorically false.

Common Law Marriage Does Not Exist in England and Wales

The phrase "common law marriage" has no legal meaning under English law. It does not exist as a status, a protection, or a right. It never has. Unlike some other legal systems, English law does not recognise long-term cohabitation as conferring any of the rights associated with marriage — regardless of how long you have been together, whether you share a home, whether you have children together, or how intertwined your finances are.

This is not a technicality or a grey area. Citizens Advice is unambiguous: cohabiting couples have no automatic legal right to each other's property, pension, or estate on death. The law treats an unmarried partner, in terms of inheritance rights, identically to a stranger.

What Actually Happens When a Cohabiting Partner Dies Without a Will

If you are unmarried and your partner dies intestate — without a valid will — the rules of intestacy govern what happens to their estate. Those rules do not include you. At all. The estate passes first to any children, then to parents, then to siblings — and if none of those exist, to more distant relatives or ultimately the Crown.

This means a couple who have lived together for twenty years, raised children together, and shared every financial decision — but never married — can find themselves in a situation where the surviving partner has no automatic right to remain in the home they shared, no claim on savings they contributed to, and no legal entitlement to any part of the estate.

Can a Cohabiting Partner Make a Legal Claim?

It is possible — but expensive, uncertain, and deeply distressing. Under the Inheritance (Provision for Family and Dependants) Act 1975, a cohabiting partner who was financially dependent on the deceased may apply to the court for reasonable provision from the estate. Under the Trusts of Land and Appointment of Trustees Act 1996 (TOLATA), a partner may be able to claim a beneficial interest in jointly occupied property.

Both routes involve litigation. Both are costly. Both are uncertain in outcome. Both require a grieving partner to go to court against the deceased's family at the worst possible moment. Neither is a substitute for a will.

The Myth Is Most Dangerous for Long-Term Couples

Ironically, the common law marriage myth is most likely to be believed — and most damaging — among couples who have been together longest. A couple who have been together for thirty years and own a home together may have no reason to question their legal position. They feel protected. They are not.

Property owned as joint tenants does pass by survivorship regardless of a will — but property owned as tenants in common (increasingly common for practical and tax reasons) forms part of the estate and must be directed by a will. Savings, investments, and personal possessions in one partner's sole name pass entirely according to the intestacy rules. A long relationship provides no protection whatsoever.

The Fix: Mirror Wills

The solution is straightforward: mirror wills. Two legally independent documents — one for each partner — that direct your respective estates to each other on the first death, and to chosen secondary beneficiaries on the second. They close the intestacy gap entirely and cost a combined £29.99 from Wills Assured.

A pair of mirror wills for a cohabiting couple provides:

• Complete direction of the estate to the surviving partner
• Nominated secondary beneficiaries (children or named individuals) for the second death
• Guardianship provisions for any children under 18
• Executor appointments so the surviving partner can act immediately without court involvement

The legal protection that marriage provides automatically takes thirty minutes and £29.99 to replicate through a will. There is no other document, no other process, and no other route that achieves the same outcome.