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Blended families — where a couple has children from previous relationships as well as, perhaps, children together — are one of the situations where intestacy produces the most heartbreaking outcomes. Stepchildren who may have been raised by a step-parent for years, who may have lived with them full-time, who may be as close as any biological child, receive absolutely nothing under the intestacy rules.
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The intestacy rules under the Administration of Estates Act 1925 draw a strict legal distinction between:
This means that in a blended family, if the step-parent dies without a will:
Similarly, if a biological parent dies without a will:
For a full overview of intestacy rules, see our main intestacy guide.
Consider this blended family: John and Sarah are married. John has two children from his first marriage (A and B). Sarah has one child from her first marriage (C). They also have one child together (D).
John dies without a will. His estate is worth £500,000. Under intestacy:
John may have loved C as his own. He may have been C's primary caregiver. He may have always intended to treat all four children equally. But without a will, the law does not care. C gets nothing.
Where the deceased was married, the spouse receives the statutory legacy of £322,000 first. This protects the surviving spouse, but it can also inadvertently favour the surviving spouse's children — who will ultimately inherit from the surviving spouse — over the deceased's biological children from a previous relationship.
This is particularly acute in second-marriage scenarios. See our dedicated guide on dying without a will with a second marriage and children from the first marriage.
The priority order for applying for letters of administration mirrors the inheritance priority order. The surviving spouse has first priority. If there is no surviving spouse, the biological/adopted children apply. Stepchildren have no priority right to apply.
This can create practical difficulty where a stepchild was deeply involved in the deceased's care and life, but has no legal standing to deal with the estate. They must rely on the surviving spouse or the deceased's biological children to act.
A stepchild may be able to apply to the court under the Inheritance (Provision for Family and Dependants) Act 1975 if they were treated as a child of the family and were financially dependent on the deceased. However:
A 1975 Act claim by a stepchild is possible but not certain, and it should be seen as a last resort rather than a substitute for proper estate planning.
If the family home was held as joint tenants between the deceased and the surviving spouse, it passes to the surviving spouse by survivorship — outside the estate, unaffected by intestacy. This provides security for the surviving parent and any children living in the home, including stepchildren.
If held as tenants in common, the deceased's share forms part of the estate and passes under intestacy — which may mean the biological children from a previous relationship have an interest in the family home. This can create tension between the surviving spouse's desire to remain in the home and the biological children's interest in their inheritance.
For anyone in a blended family, a will is not optional — it is essential. Only a will can ensure that stepchildren are included, that different children are treated according to the parent's actual wishes, and that the surviving partner is protected.
A well-drafted will for a blended family might include:
For more on this specific topic, see our guide on dying without a will with a second marriage and children from the first marriage. And for general will-making guidance, see our guide to writing a will in the UK in 2026.
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If you die married with no children and no will, your spouse inherits your entire estate. How the intestacy rules work, what documents are needed, and next steps.
Married with children and no will? Your spouse gets £322,000 plus personal chattels plus half the remainder. Children share the other half. Full UK intestacy rules explained.
Unmarried partners have no automatic inheritance rights under UK intestacy law — regardless of relationship length. What happens to the estate, and what you can do.
Long-term cohabiting partners have no automatic inheritance rights in England and Wales. What the law says, what you can claim, and how to protect your partner.
When someone dies without a will and no surviving spouse, children inherit equally. How UK intestacy rules divide the estate between children, and what to do next.
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