Guardianship in a Will UK: Appointing Guardians for Your Children
If you have children under 18, naming a guardian is the single most important reason to write a will. Without it, if both parents die, the family court decides who raises your children — informed by relatives, social services, and opinions you cannot correct. With it, you choose. This guide explains how guardianship appointments work in England & Wales and how to make yours stick.
The legal basis
Section 5, Children Act 1989: “A parent who has parental responsibility for his child may appoint another individual to be the child's guardian in the event of his death.” The appointment must be in writing, dated, and signed by the person making it (or signed at their direction in their presence and attested by one or more witnesses). A will satisfies these requirements automatically.
When the appointment takes effect
A guardian appointed in your will takes parental responsibility only when:
- →You were the only parent with parental responsibility at your death, or
- →A child arrangements order is in force naming you as the person with whom the child lives (or, for orders made before 22 April 2014, a residence order), or
- →Both parents with PR have died
In a standard scenario with two living parents, if one parent dies the surviving parent continues to have sole PR — your testamentary guardian does not step in. That is usually what people want. The guardian clause is your insurance policy against the worst-case double bereavement.
How to choose a guardian
This is the hardest question in will-writing. Use the following five-factor test:
- Relationship with your child. Does your child already know and trust them? A familiar face matters more than any other factor in a traumatic transition.
- Values and parenting style. Would they raise your children with similar values around education, religion, discipline, and money? You cannot dictate; you can pick someone aligned.
- Stability. Is their relationship stable, their home settled, their work secure? Moving a bereaved child into chaos compounds harm.
- Willingness. Have you actually asked them? Naming someone who will refuse or feel resentful is worse than naming no one.
- Capacity. Do they have physical energy, financial headroom (especially with financial provision from your estate), and emotional resilience?
Common choices in order of frequency: a sibling of the deceased parent, the child's godparents, the child's grandparents (with age-related concerns), a close friend. There is no legal restriction on who can be named — they do not need to be a blood relative.
Joint vs. substitute guardians
Joint guardians (usually a married couple) act together — both hold parental responsibility and major decisions are made jointly. Risk: if they separate or divorce, the arrangement can break down. Our Single Will Kit lets you specify what happens if joint guardians separate (e.g. “in the event of separation, my children shall live with X”).
Substitute guardians are your Plan B: if your primary guardian cannot or will not act (death, ill-health, refusal, relocation abroad), the substitute steps in. Always name at least one substitute.
Funding the guardianship
A guardian inheriting your children also inherits a major financial commitment. Structure your will so that money follows the children:
- →Trust for minors: inheritance held in trust until a chosen age (usually 18, 21, or 25). Our Single Will Kit includes a standard 18 trust; trusts to later ages are available on request.
- →Trustees: appoint financially competent trustees (often different people from the guardians, to provide oversight). Trustees release funds to the guardian for the children's maintenance, education, housing, and activities.
- →Letter of Wishes: a non-binding but highly persuasive document explaining how you want the money used, schools you would prefer, activities you would hope they continue, values you want upheld. See our Letter of Wishes template.
- →Life insurance in trust: a policy paid into a trust (not the estate) provides immediate liquidity without waiting for probate. Speak to a regulated adviser.
The Letter of Wishes — guardianship edition
A guardianship Letter of Wishes is not legally binding but carries significant persuasive weight with guardians, trustees, and (if ever needed) the court. It should cover:
- ✓Why you chose this guardian — reassurance for everyone involved, including the children later
- ✓Your values and priorities (education, religion or no religion, relationship with extended family)
- ✓Practical wishes: what school or type of school, continuing friendships, staying in the same area if possible
- ✓Contact with grandparents, step-parents, and other significant adults
- ✓Expected financial support level and what it should cover
- ✓Direct messages to your children, to be shared at ages you specify
What if your chosen guardian is challenged?
Anyone with standing (typically a relative, social services, or someone claiming better suitability) can apply to the family court to remove or replace the guardian. The court applies the welfare checklist in section 1(3) Children Act 1989: the child's wishes, their needs, the effect of change, age/sex/background, any harm, capability of each person considered, and the powers available to the court. Your will and Letter of Wishes are significant evidence but not determinative. Clear, well-reasoned documentation dramatically reduces the risk of successful challenge.
Frequently asked questions
Can I legally appoint a guardian for my children in my will?+
Yes. Section 5 of the Children Act 1989 allows any parent with parental responsibility to appoint one or more guardians to take parental responsibility for their child if the parent dies. The appointment takes effect only if there is no surviving parent with parental responsibility, or if a child arrangements order (residence order) named the deceased as the person with whom the child lives.
When does a testamentary guardian actually take over?+
Only when the last surviving parent with parental responsibility dies, or where a child arrangements order in favour of the deceased is in force. If one parent dies, the other (assuming they have parental responsibility) automatically continues to have sole responsibility — the will-appointed guardian does not override a living parent.
Who has parental responsibility in English law?+
A mother has parental responsibility automatically. A father has it automatically if married to the mother at the time of birth, or (for births since 1 December 2003) if named on the birth certificate. Otherwise a father acquires it by a parental responsibility agreement with the mother or a court order. Same-sex partners and step-parents acquire it by agreement or court order. You can appoint a guardian regardless of whether you hold sole or shared PR.
How many guardians should I name?+
Name at least one, ideally two. You can appoint a primary guardian and a substitute (who steps in if the primary cannot or will not act). Joint guardians are also permitted — typically a married couple acting together. Avoid naming too many because they must agree on major decisions; one or two primary guardians plus a clear substitute is best.
Does the court have to approve a guardian named in a will?+
The appointment takes effect automatically on the death of the last parent with PR — no court approval needed. But if anyone challenges the appointment (disappointed relatives, social services, or a person claiming better suitability), the family court can replace or vary the appointment under the Children Act. The court's overriding principle is the child's welfare, not the parent's wishes — though your wishes are strongly persuasive.
Can I leave money to help the guardians look after my children?+
Yes, and you should. Guardianship without financial provision is a burden — a Letter of Wishes can explain how you would like inherited funds used, though it is not binding. Most parents set up a trust in the will (a 'discretionary trust' or a 'bereaved minor trust' under section 71A IHTA 1984) to hold the children's inheritance until they reach a specified age (18, 21, or 25) with trustees empowered to release funds to the guardians for maintenance, education, and housing.
Who should I NOT choose as a guardian?+
Avoid people who: are significantly older than you (they may not outlive you); live in an unstable situation; have strained relationships with your children; hold values very different from yours; are geographically far from your children's schools and support network; or have not been asked. Always have an honest conversation with your proposed guardian before naming them — appointing someone by surprise almost never works.
Name a guardian in your will tonight
Our Single Will Kit includes a full guardianship clause, substitute guardian option, and a trust for minors up to age 18. Pair it with the Guardianship Intentions Workbook to think through the decision properly, and a Letter of Wishes template to explain your choices.
General information on the law of England & Wales as at April 2026. Not legal advice. Families with separation agreements, children from different relationships, or cross-border issues should take specialist family-law advice.