Can I write a will before surgery?

England & Wales · Urgent Wills · Health

Quick answer

Yes — and it's a sensible precaution many people take. You can make a valid will the same day, provided you have mental capacity and the will is correctly signed and witnessed by two independent people present together. Do it before any pre-med or sedation, since capacity matters. A guided online service like ClearLegacy makes it quick.

Detailed explanation

A pre-surgery will is about peace of mind, not pessimism.

Make it while you have full capacity — before sedation or strong medication.
Two independent witnesses (not beneficiaries or their spouses), present together.
Hospital staff can sometimes witness, but not if they benefit under the will.
It's valid immediately — you don't need to wait or register it.

Example scenario

Booked in for an operation in two days, Mark completes his will online that night and signs it the next day with two friends witnessing — well before he's admitted, while his capacity is clear.

Timing matters: make and sign the will before any pre-medication or sedation, so there's no doubt you had capacity when you signed.

What happens next?

Complete the questionnaireA few guided questions about you, your family and your wishes.
Structured reviewYour answers are checked automatically for completeness and consistency before your will is produced.
Receive your documentsYour will and supporting paperwork are produced, ready to print.
Sign correctlyClear instructions on signing and witnessing so the will is legally valid.
Protect your familyYour wishes are recorded and your loved ones are spared the intestacy default.

Sources

Wills Act 1837, section 9 (signing and witnessing) — legislation.gov.uk
GOV.UK — Make a will (signing and witnessing rules)
Citizens Advice — Wills: signing and witnessing your will

Reviewed by: ClearLegacy editorial team
Last reviewed: June 2026
Next review: December 2026
Jurisdiction: England & Wales

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