You've written your will — or generated it with an online service like CheapWills for £9.99. Now comes the part that actually makes it legally valid: signing and witnessing.

Get this wrong and your entire will could be invalid. Get it right and it takes five minutes.

Here are the exact rules under the Wills Act 1837, the common mistakes that invalidate wills, and a step-by-step guide to doing it properly.

The Rules: What the Law Requires

The signing and witnessing requirements come from Section 9 of the Wills Act 1837 (as amended). They're not complicated, but they're strict.

Rule 1: You Must Sign the Will

The testator (that's you — the person making the will) must sign the will. You sign with your usual signature.

If you're physically unable to sign, someone else can sign on your behalf — but they must do so in your presence and at your direction, and the two witnesses must be present.

Rule 2: Two Witnesses Must Be Present When You Sign

Both witnesses must be physically present in the room when you sign. Not one at a time — both, simultaneously.

Rule 3: Both Witnesses Must Then Sign

After watching you sign, both witnesses must sign the will themselves. They must sign in your presence and in each other's presence.

Rule 4: Witnesses Must Be 18 or Over

Both witnesses must be adults (aged 18+).

Rule 5: Witnesses Cannot Be Beneficiaries

A witness cannot be someone who inherits under your will. This is the most commonly broken rule and it has serious consequences.

If a beneficiary witnesses your will, the will remains valid — but their gift is void. They lose their inheritance. The same applies to the spouse or civil partner of a witness.

Summary of All Signing Requirements

Requirement Detail
Testator signs Your usual signature
Two witnesses present Both in the room when you sign
Witnesses sign Both sign after watching you sign
All present together You and both witnesses must be in the same room throughout
Witnesses are 18+ Must be adults
Witnesses are not beneficiaries And not married to/civil partners of beneficiaries
Physical signatures only No electronic or digital signatures

Step-by-Step: How to Sign Your Will Correctly

Before You Start

  1. Print your will on standard A4 paper (if you've used an online service)
  2. Read it through one final time — check every name, address, and provision
  3. Choose two witnesses who meet the requirements (see below)
  4. Arrange a time when all three of you can be in the same room

The Signing Process

Step 1: You (the testator) sit down with your printed will and a pen. Both witnesses are in the room with you.

Step 2: Sign the will in the designated signature space. Use your normal signature. Both witnesses watch you sign.

Step 3: The first witness signs in the designated witness signature space, writes their full name and address, and (optionally) their occupation. They do this while you and the second witness are both present.

Step 4: The second witness does the same: signs, writes their full name and address, in the presence of you and the first witness.

Step 5: You're done. The will is now legally valid.

After Signing

Who Can Witness a Will?

Almost anyone can be a witness, as long as they meet these criteria:

Must Be:

Must NOT Be:

Good Choices for Witnesses:

Witnesses Don't Need To:

Common Mistakes That Invalidate Wills

Mistake 1: Beneficiary as Witness

This is the most common and most damaging error. If one of your witnesses is also a beneficiary (or married to a beneficiary), the will is still valid — but that person's gift is automatically void.

Example: You name your daughter as a beneficiary and she also witnesses the will. The will is valid, but your daughter's inheritance is cancelled.

Prevention: Double-check that neither witness (nor their spouse/civil partner) is named anywhere in your will.

Mistake 2: Witnesses Not Present at the Same Time

Both witnesses must be present when you sign. You can't have one witness watch you sign on Monday and the other on Tuesday.

Prevention: All three people (you + two witnesses) must be in the same room at the same time when signing takes place.

Mistake 3: Signing in the Wrong Order

You must sign first. Then both witnesses sign. Not the other way around.

Prevention: Follow the order: testator signs → witness 1 signs → witness 2 signs. All in each other's presence.

Mistake 4: Using Electronic Signatures

As of 2026, electronic signatures are not valid for wills in England and Wales. You must use a wet pen-on-paper signature. The same applies to witnesses.

Prevention: Print your will on paper. Sign with a pen. Witnesses sign with a pen.

Mistake 5: Not Including Witness Details

While the law technically only requires signatures, best practice is for witnesses to also write their full name, address, and occupation. This helps identify them later if the will is ever challenged.

Prevention: Ask witnesses to print their name, write their address, and note their occupation next to their signature.

Mistake 6: Signing the Wrong Place

Sign in the designated signature area. Don't sign in the margin, at the top of the page, or on the wrong page.

Prevention: If you've used CheapWills, the signature areas are clearly marked on the PDF. Sign where indicated.

Mistake 7: Video Witnessing

Video calls do not count as being "present." Witnesses must be physically in the same room. The temporary COVID-19 rules that allowed video witnessing in England and Wales expired in January 2024.

Prevention: Arrange for witnesses to be physically present. There's no alternative.

What If You Can't Find Two Witnesses?

This is a common practical problem, especially for people who live alone or have limited social contact.

Options:

What NOT to Do:

Multiple-Page Wills

If your will has more than one page:

Storing Your Signed Will

Once properly signed and witnessed, your will needs to be stored safely:

At Home

Keep it in a fireproof safe, lockbox, or secure drawer. Make sure your executors know exactly where it is. A will that can't be found after your death is effectively useless.

With a Solicitor

Many solicitors offer free or cheap will storage. You don't need to have used a solicitor to write the will — they'll often store it regardless.

With the Probate Service

You can deposit your will with the government's Probate Service for a one-off fee of £7. It's stored securely, and your executors can retrieve it when needed.

At Your Bank

Some banks offer safe deposit boxes. These are secure but may be difficult for executors to access quickly after your death.

Important:

After Signing: What if You Need to Make Changes?

Minor Changes

Never cross out, write on, or annotate a signed will. Any alterations after signing must be done properly — either through a codicil (a formal amendment) or by making a new will entirely.

Codicils

A codicil is a legal document that amends an existing will. It must be signed and witnessed with the same formality as the original will. Codicils are fine for minor changes but can cause confusion if there are many of them.

Making a New Will

For anything more than a trivial change, making a new will is simpler and safer. A new will automatically revokes all previous wills (this standard clause is included in CheapWills' templates). Destroy the old will to prevent confusion.

At CheapWills, you can make a new will at any time for £9.99. Same price every time.

Learn more about updating your will

Signing Checklist

Before you start:

During signing:

After signing:

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Frequently Asked Questions

Can my spouse witness my will?

Only if they aren't a beneficiary. Since most wills name the spouse as the main beneficiary, in practice your spouse almost certainly cannot witness your will.

Can a family member witness my will?

Yes, as long as they're not a beneficiary of the will and not married to/civil partner of a beneficiary. If your brother isn't mentioned in your will, he can be a witness.

What happens if a beneficiary witnesses my will?

The will remains valid, but the beneficiary's gift is automatically void. They lose their inheritance. This also applies if their spouse or civil partner is a witness.

Do witnesses need to read my will?

No. They're witnessing your signature, not the contents. Your will is private. Witnesses don't need to know what's in it.

Can I witness someone else's will?

Yes, as long as you're 18+, mentally capable, and not a beneficiary (or married to one). You don't need any special qualifications.

Can I use the same witnesses for my partner's will?

Yes. The same two people can witness both partners' wills. Each will is signed separately, but the same witnesses can serve for both signing ceremonies.