Will Writing UK Guide

MB By Mustafa Bilgic | Updated: 20 February 2026 | Published: 1 January 2025 | ⏱ 12 min read
Key facts for 2025/26: Over half of UK adults do not have a will. Without one, the intestacy rules decide who inherits — and your wishes count for nothing. Writing a will can cost as little as £10 and can save your family thousands in disputes and delays.

Why You Need a Will

A will is a legal document that sets out how you want your estate — everything you own — to be distributed after your death. It also lets you appoint an executor (the person who carries out your wishes), guardians for any children under 18, and make specific gifts of money, property, or possessions to individuals or charities.

Without a will, you are said to die intestate. The Government's intestacy rules then apply automatically, and they may distribute your estate in ways you would never have chosen. Unmarried partners, stepchildren, close friends, and favourite charities receive nothing under intestacy — regardless of how long or how closely you were connected.

Having a valid, up-to-date will also simplifies the probate process for your family during a difficult time, and can form part of a broader inheritance tax planning strategy.

Dying Intestate: Who Inherits Under the Intestacy Rules?

In England and Wales, the Administration of Estates Act 1925 (as amended) sets out the strict order in which relatives inherit if you die without a will. The rules differ slightly in Scotland (succession law) and Northern Ireland.

England & Wales Intestacy Order (2025)

Surviving RelativesWho Inherits & How
Spouse/civil partner only (no children)Entire estate to spouse/civil partner
Spouse/civil partner + childrenSpouse gets first £322,000 + all personal possessions + half the remainder. Children share the other half equally.
Children only (no spouse)Entire estate split equally between children (or their descendants if a child has died)
No spouse, no childrenEstate passes to parents (equally if both alive)
No spouse, no children, no parentsFull siblings (equally), or half-siblings, then grandparents, then aunts/uncles
No surviving relativesEstate passes to the Crown (bona vacantia)
Unmarried partners are NOT protected. No matter how long you have lived together, an unmarried partner inherits nothing under intestacy rules. Only marriage, civil partnership, or a valid will creates an entitlement.

How to Make a Legally Valid Will in the UK

Under the Wills Act 1837 (England & Wales), a will must meet all of the following requirements to be legally valid:

  1. In writing — typed or handwritten (audio and video recordings are not valid).
  2. Signed by the testator — the person making the will must sign at the bottom (or someone must sign in their presence and at their direction if they cannot sign themselves).
  3. Two witnesses present simultaneously — both witnesses must be present at the same time and watch the testator sign, then each witness must sign in the testator's presence.
  4. Witnesses must be independent — witnesses and their spouses or civil partners cannot receive any benefit under the will. Their signatures would still be valid, but any gift to them would be void.
  5. Testamentary capacity — the testator must be of sound mind, memory, and understanding (the "Banks v Goodfellow" test: knowing the nature of making a will, the extent of their property, the people who might expect to benefit, and that no disorder of the mind is influencing their decisions).
  6. Must be 18 or over — with limited exceptions for members of the armed forces on active service.

What to Include in Your Will

A comprehensive will should address the following elements:

1. Executor Appointment

Your executor is legally responsible for administering your estate — gathering assets, paying debts, filing tax returns, and distributing the estate according to your wishes. You can appoint up to four executors. Many people choose a trusted family member, friend, or their solicitor. Always name a substitute executor in case your first choice is unable or unwilling to act.

2. Beneficiaries

Name every beneficiary clearly — full legal name, date of birth, and relationship to you — to avoid ambiguity. State what each person should receive: a specific sum, a percentage of the estate, or a specific item.

3. Specific Gifts

You can leave specific items — a piece of jewellery, a car, a sum of cash — to named individuals. Make sure descriptions are precise enough to be unambiguous. Be aware that if you no longer own the item at the date of death (it has been sold or given away), the gift will fail (known as "ademption").

4. Residuary Estate

The residuary estate is everything left after specific gifts, debts, taxes, and administration costs have been paid. Always name a residuary beneficiary. If you fail to do so, the undistributed portion falls into partial intestacy and the intestacy rules apply to it.

5. Guardians for Minor Children

If you have children under 18, appointing a guardian in your will is essential. Without one, a court may need to decide who cares for your children. Discuss this with your chosen guardian before naming them.

6. Trusts

You can direct that assets be held in trust — for example, for a child until they reach 18 or 21, or for a beneficiary with a disability. Testamentary trusts require careful drafting and often benefit from solicitor input.

Will Writing Costs: Your Options

DIY Will Kit

£10 – £30

Printed template packs and online fill-in-the-blank tools. Suitable only for very straightforward estates with no trusts, business assets, or complex family circumstances. Any error can invalidate the entire will or create expensive disputes.

Online Will Writing Service

£50 – £150

Services such as Farewill, Kwil, or Co-op Legal Services guide you through questions and draft a legal document. Quality varies. Look for services that are members of the Society of Will Writers or Institute of Professional Willwriters.

Professional Will Writer

£100 – £200

A regulated (but not solicitor-level) professional. Often offers home visits. Check they hold professional indemnity insurance and belong to a recognised professional body.

Solicitor (Single Will)

£150 – £400

A solicitor regulated by the Solicitors Regulation Authority offers the highest level of legal advice. Recommended for complex estates, business interests, second marriages, or potential disputes. Free Will Week and Solicitors for the Elderly offer reduced-cost schemes.

Mirror Wills for Couples (Solicitor)

£250 – £600

Two separate but mirrored wills — each partner leaves everything to the other, then to the same beneficiaries. More cost-effective than two unrelated wills. Important: mirror wills are not mutual wills — each partner can change their will after the other dies, unless a separate "mutual wills" agreement is made.

When to Update Your Will

A will should be reviewed after any major life event:

Minor updates can be made by a codicil — a separate signed and witnessed document that amends but does not replace the original will. For major changes, it is usually cleaner to write a new will and explicitly revoke the previous one.

Storing Your Will

The original signed will must be kept safe but accessible to your executor when needed. Options include:

Never store the original will in a bank safe deposit box that requires a grant of probate to open — your executor would be caught in a circular problem.

Executor Duties

After your death, your executor must:

  1. Register the death and obtain death certificates.
  2. Locate and value all assets and liabilities (banks, investments, property, debts).
  3. Calculate any inheritance tax due and pay HMRC within six months of the date of death to avoid interest charges.
  4. Apply for a Grant of Probate if required (see our Probate Costs guide).
  5. Collect assets, pay debts and administration costs.
  6. Distribute the estate to beneficiaries and prepare estate accounts.

Executors act in a personal legal capacity and can be held liable for mistakes, so professional executor services are worth considering for large or complex estates.

Living Will (Advance Directive): A Different Document

A living will — also called an advance decision or advance directive — is entirely separate from a last will and testament. A living will records your wishes about medical treatment if you become incapacitated and unable to communicate. You can use it to refuse specific life-sustaining treatments (such as cardiopulmonary resuscitation or artificial ventilation). A living will is distinct from a Lasting Power of Attorney for Health & Welfare, which appoints someone to make decisions on your behalf rather than setting out your own refusals in advance. Neither document handles financial matters — that requires a Lasting Power of Attorney for Property & Financial Affairs.

Frequently Asked Questions

What happens if I die without a will in the UK?

If you die without a will (intestate), the intestacy rules decide who inherits your estate. Your spouse or civil partner inherits the first £322,000 plus personal possessions. The remainder is split equally between the spouse and your children. If you have no spouse or children, your estate passes to parents, then siblings, then more distant relatives. Unmarried partners receive nothing under intestacy rules regardless of how long you have been together.

How much does it cost to write a will in the UK?

Will writing costs vary: DIY will kits cost £10–£30, online will writing services charge £50–£150, professional will writers charge £100–£200, and solicitors charge £150–£400 for a single will. Mirror wills for couples (two wills with mirrored wishes) typically cost £250–£600 with a solicitor.

What makes a will legally valid in the UK?

For a will to be legally valid in England and Wales it must be: in writing (typed or handwritten), signed by the testator (or someone in their presence and at their direction), witnessed by two people present at the same time who both sign in the testator's presence. Witnesses and their spouses or civil partners cannot benefit from the will.

Does getting married invalidate a will in the UK?

Yes. Under English and Welsh law, marriage or civil partnership automatically revokes (cancels) any existing will, unless the will was made in anticipation of that specific marriage. Divorce does not revoke a will but gifts to a former spouse and their appointment as executor take effect as if they had died on the date of the decree absolute.

Where should I store my will in the UK?

You should store your original will somewhere safe and accessible. Options include: with your solicitor (often free or small charge), at home in a fireproof safe, at a bank (some charge), or registered with the National Will Register (Certainty Will Register, from around £30 for lifetime storage). Tell your executor where the will is kept. Do not store it in a safe deposit box that requires a grant of probate to open.

What is the difference between a will and a living will?

A last will and testament deals with the distribution of your estate after you die. A living will (also called an advance directive or advance decision) is a separate legal document that records your wishes about medical treatment if you become unable to communicate. A living will can refuse specific life-sustaining treatments. Neither document deals with managing your finances while you are alive — that is handled by a Lasting Power of Attorney.

Can a will be contested in the UK?

Yes. A will can be contested on grounds including: lack of testamentary capacity, undue influence, fraud or forgery, improper execution (not signed or witnessed correctly), or lack of knowledge and approval of the contents. Claims under the Inheritance (Provision for Family and Dependants) Act 1975 can also be brought by family members or dependants who feel they were not reasonably provided for. Contested wills can be very costly; professional will drafting reduces the risk considerably.