Key facts (2026): A valid will in England and Wales must be in writing, signed by the testator in front of two independent witnesses who also sign. There is no age minimum for witnesses but they must be over 18, mentally capable, and cannot be beneficiaries or married to beneficiaries. A will made without proper execution is invalid.
Half of UK adults do not have a will — and many who do have wills that are out of date or incorrectly executed. A valid, up-to-date will is one of the most important documents you can create. Without one, your estate is distributed according to the Rules of Intestacy which may not reflect your wishes at all.
What Must a Valid Will Include?
A valid will must contain: your full name and address; a statement that this is your last will and testament, revoking all previous wills; appointment of at least one executor (the person responsible for administering your estate); gifts of specific assets or cash to named beneficiaries; residuary estate clause (who gets everything remaining after specific gifts and debts); and if you have children under 18, appointment of a guardian. Without a residuary estate clause, any assets not specifically mentioned may pass under intestacy rules.
The Execution Requirements — Getting These Right Is Critical
Step 1: Sign at the bottom of the will in the presence of both witnesses simultaneously. Step 2: Both witnesses must sign in your presence and in each other's presence immediately after you sign. Step 3: Witnesses must print their full name and address. Step 4: Do not sign in advance and ask witnesses to sign later — the simultaneous presence requirement is strict. A will signed without proper execution is completely invalid — no matter how clear your intentions were.
When You Need a Solicitor
Always use a solicitor for: wills involving trusts (discretionary trusts, life interest trusts); complex family situations (blended families, estranged relatives); significant assets or IHT planning; property abroad; business interests; and where there is any risk of the will being contested. For a simple will leaving everything to a spouse and then children, an online service (£30–£100) or a straightforward solicitor will (£150–£300) is entirely adequate.
Our Verdict
Writing a will is not complicated for most people — but executing it correctly is where errors happen. The simultaneous presence of two independent witnesses when you sign is the most commonly breached requirement and the most common cause of will invalidity. If in any doubt about the execution, have a solicitor supervise the signing process — most will do this for a modest fee even if you have written the will yourself.
Frequently Asked Questions
How do I write a will UK?
Write down your wishes, appoint an executor, name beneficiaries for specific assets and the residuary estate. Sign in front of two independent witnesses who also sign simultaneously. Store it safely and tell your executor where it is.
Can I write my own will UK?
Yes — a handwritten or typed will is legally valid if correctly executed. The execution (signing in front of two simultaneous witnesses) is the most critical element.
How often should I update my will?
Review every 3–5 years or after any major life event — marriage (which revokes an existing will in England and Wales), divorce, birth of children, significant change in assets, or death of a beneficiary or executor.
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- Probate Cost UK 2026
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- How to Avoid Inheritance Tax UK
Disclaimer: For informational purposes only. Verify with official sources before making decisions.
Last updated: April 2026 · Author: Chandraketu Tripathi
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