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A will with only one witness is legally invalid in England and Wales. This is one of the starkest rules in English succession law — the requirement for two witnesses under section 9 of the Wills Act 1837 is absolute, and courts cannot rectify or overlook it. An otherwise perfectly clear and unambiguous will, clearly expressing the testator's wishes, has no legal effect whatsoever if it was witnessed by only one person. The estate must be administered as if there is no will at all.
Section 9 of the Wills Act 1837 sets out four requirements for a valid will, one of which is that the testator's signature must be made or acknowledged in the presence of two or more witnesses present at the same time, and each witness must sign in the testator's presence.
"Two or more witnesses" means that one witness is not sufficient. This requirement has been part of English law since 1837 and it applies to all wills executed in England and Wales (with the narrow exception for privileged wills — see below).
The witnesses do not need to know the contents of the will. They do not read it. Their function is simply to confirm, by their presence and signature, that they witnessed the testator sign the document. But there must be two of them.
No. Once the testator has died, there is no mechanism to fix a will that was executed with only one witness. Unlike some other will defects — such as an ambiguous clause where the court may admit evidence of the testator's intention — the two-witness requirement is a formal requirement that cannot be overlooked or cured after the fact.
This is different from some other jurisdictions. In some US states, a court has a "substantial compliance" doctrine that allows a court to admit a will that nearly complies with the formalities. English law does not have an equivalent — the two-witness rule is binary: either it is met or it is not.
A process called notarial executionexists in Scotland (and in civil law systems elsewhere) where a notary can confirm the testator's capacity and intent, which can help in some circumstances. This process does not exist in English law and cannot be used to validate a one-witness will in England or Wales.
Because the will has no legal effect, the estate is administered exactly as it would be if the person had died without making any will at all. This means the intestacy rules apply.
Under the intestacy rules in England and Wales:
The consequences can be severe — especially where the invalid will left money to an unmarried partner, a friend, or a charity. Those people will receive nothing. Close relatives who were specifically excluded in the will may inherit under the intestacy rules.
Because the will is invalid, you cannot apply for a Grant of Probate — probate only applies where there is a valid will. Instead, you must apply for Letters of Administration, which is the equivalent grant for intestate estates.
The person entitled to apply for Letters of Administration is determined by the intestacy rules — typically the surviving spouse or civil partner, or failing that the children of the deceased. The person named as executor in the invalid will has no special priority.
You should still submit the invalid will to the Probate Registry with the application — they will note it but confirm they cannot admit it to probate, and the grant will be issued as Letters of Administration rather than a Grant of Probate.
Section 11 of the Wills Act 1837 creates an exception for privileged wills made by military personnel on actual military service, and by mariners or seamen at sea. These individuals can make a valid will without any witnesses at all — or even verbally.
This exception is narrow and applies only to military personnel who are genuinely on active service (not simply employed in the armed forces in a non-operational role). If the deceased was on active military service at the time they made the one-witness or no-witness will, seek legal advice — the will may be valid as a privileged will.
Scotland has a separate legal system. Under the Requirements of Writing (Scotland) Act 1995, a valid Scottish will requires only one witness (who must be aged at least 16 and must sign in the presence of the testator). A will made in Scotland with only one witness may therefore be valid under Scottish law.
The applicable law is determined by where the deceased was domiciled — their permanent home country. If the deceased was domiciled in Scotland, Scottish law governs their will. If they were domiciled in England or Wales, English law applies, and two witnesses are required.
If there is any doubt about domicile, seek legal advice before proceeding.
A will with one witness is just one of several common validity problems. Related issues include:
The one-witness problem almost never occurs with wills drafted and executed by a solicitor — solicitors check that two witnesses are present and sign correctly. It is most common with homemade or DIY wills where the testator was unaware of the two-witness requirement, or where only one witness was available at the time.
If you are helping someone make a will, or thinking about making your own will, see our guide to how to write a will in the UK for the correct procedure, and our guide to the rules for witnesses signing a will.
No. English courts have consistently held that the two-witness requirement is a mandatory formal requirement. Unlike some other will disputes (such as ambiguous wording, where the court may admit evidence), there is no judicial discretion to overlook a failure to comply with section 9 of the Wills Act 1837. The will is simply invalid.
Both witnesses must sign the will in the testator's presence. A witness who was present but did not sign does not satisfy the requirement. Their statement that they were present cannot retrospectively cure the absence of their signature on the document.
Once the testator has died, it is too late for a second witness to sign. The will must be executed during the testator's lifetime, with both witnesses signing in the testator's presence. Post-death attempts to remedy the defect are ineffective and have no legal standing.
Yes — in theory. If all the people who would benefit under the intestacy rules agree to distribute the estate as if the invalid will were valid, they can do so by a deed of variation or a family agreement. However, this requires the consent of everyone entitled under intestacy (including minor beneficiaries, who would need court approval), and it has tax implications. Seek legal advice before attempting this approach.
Whether a will is valid is generally determined by the law of the country where the deceased was domiciled. If the deceased was domiciled in Scotland, a one-witness will made in Scotland may be valid under Scottish law and can be recognised in England for the purpose of Scottish assets. If the deceased was domiciled in England, English law applies and two witnesses are required. The position with assets in different jurisdictions can be complex — seek specialist advice.
A valid will in England and Wales must be signed by the testator and two independent witnesses. Use our four-point checklist to assess formal validity before applying for probate.
A will witnessed by a beneficiary is valid, but the beneficiary's gift fails under s.15 Wills Act 1837. The rule catches the witness's spouse too. What executors must do when this problem arises.
How to apply for Letters of Administration when someone dies without a will. Priority order, the PA1A form, documents needed, and current timescales.
Who inherits when there's no will, intestacy rules explained, and how to apply for letters of administration.
There is no expiry date on a will in England and Wales — but marriage revokes it, divorce lapses gifts to the ex-spouse, and a later will supersedes it. Full checklist before applying for probate.
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