Writing a Will in the UK: What Happens If You Die Without One

A significant share of UK adults don’t have a valid will - and dying without one means the law, not your own wishes, decides who inherits, through a fixed set of rules that can produce outcomes very different from what most people would actually choose.

What happens without a will: intestacy rules

If you die without a valid will (known as dying ‘intestate’), your estate is distributed according to a fixed legal formula set out in the rules of intestacy, which vary slightly between England & Wales, Scotland, and Northern Ireland, but broadly prioritise a spouse or civil partner and children in a specific order - not necessarily the way you’d have chosen yourself. One notable exception is your pension: most workplace and personal pensions sit outside your estate entirely, passing according to the nomination form held by the scheme rather than your will or these intestacy rules (see our dedicated article on what beneficiaries need to know when inheriting a pension).

A common misconception: unmarried partners get nothing automatically

Under intestacy rules in England and Wales, an unmarried partner - however long the relationship, and regardless of shared children or a shared home - has no automatic legal right to inherit under intestacy. This is one of the most consequential and widely misunderstood gaps in the intestacy system, and a primary reason unmarried couples in particular need a will.

How intestacy actually divides an estate (England and Wales, simplified)

• Spouse/civil partner and children: the spouse receives the first £322,000 (a figure reviewed periodically), all personal possessions, and half of anything remaining; children share the other half.
• Spouse/civil partner, no children: the spouse or civil partner inherits everything.
• No spouse, but children: children inherit everything, divided equally.
• No spouse or children: the estate passes to parents, then siblings, then more distant relatives in a fixed legal order - and if no qualifying relatives can be found at all, the estate passes to the Crown (‘bona vacantia’).

Why this matters even more with blended families

Intestacy rules take no account of step-children (unless legally adopted), second marriages, or informal family arrangements - a second spouse and children from a first marriage can end up with an outcome neither the deceased nor their family would have chosen, purely because intestacy applies a fixed formula rather than reflecting actual family relationships or wishes (see our dedicated article on wills and second marriages).

Who becomes responsible for administering the estate

Without a will, there’s no named executor - instead, someone (usually the closest qualifying relative under the intestacy rules) must apply for ‘Letters of Administration’ rather than a Grant of Probate, giving them legal authority to administer the estate. This process broadly mirrors probate but starts from a position of legal default rather than the deceased’s own choice of executor.

What a will actually lets you control

• Who inherits, and in what proportions - including unmarried partners, friends, charities, or anyone else, not just the fixed categories intestacy recognises.
• Who acts as executor, managing the estate according to your wishes.
• Guardianship of minor children, a critical provision intestacy rules don’t address at all.
• Specific gifts or conditions, including using trusts for beneficiaries who are minors, vulnerable, or for other specific planning reasons (see our dedicated trusts article).
• Funeral wishes, which, while not always legally binding, give clear guidance to your family at a difficult time.

The bottom line

Dying without a will doesn’t mean your estate goes unclaimed - it means a fixed legal formula decides who inherits, which can produce outcomes very different from your actual wishes, particularly for unmarried couples, blended families, and anyone wanting to provide for people outside the standard intestacy categories. A properly drafted will is the only way to ensure your actual wishes are followed.