Guide
How do you sign and witness a will correctly?
A will can be perfectly written and still be invalid if it is not signed and witnessed correctly. The rules are strict, and mistakes are common with do-it-yourself wills.
Last reviewed 2 November 2026. General information, not legal advice. All guides
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The basic rules
- The will must be in writing.
- You sign it, or acknowledge your signature, with two witnesses present at the same time.
- Both witnesses then sign in your presence.
- Witnesses must be over 18 and ideally independent.
Who should not witness
A witness, or their husband, wife or civil partner, who is also a beneficiary loses their gift under the will, though the will itself remains valid. Use independent witnesses, such as neighbours or colleagues who do not benefit.
Common mistakes
- Signing first and getting the witnesses to sign later, separately.
- Using a beneficiary or their partner as a witness.
- Witnessing by video call. This was allowed for a limited period during the pandemic but is no longer permitted.
- Removing staples or adding pages after signing, which can cause doubts about whether the will is complete.
- Losing the original and relying on a copy.
Afterwards
Keep the signed original safe and tell your executors where it is. See our guide on where to store your will.
Quick answers
Common questions
Can my spouse witness my will?
They can, but they would lose any gift under it, so it is better to use independent witnesses.
Does a witness need to read the will?
No. They only need to see you sign, and they do not need to know what it says.
What happens if a will is not witnessed correctly?
It may be invalid, in which case an earlier will or the intestacy rules could apply. This is why professional help is worthwhile.
Keep reading
Related guides
Will writer, solicitor or DIY will: which should you choose?
How the options compare on cost, protection and risk.
How do you change a will?
When a codicil is enough and when to make a new will.
Are wills public documents, and where should you store yours?
What becomes public after probate and where to keep the original.
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