This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Learn how to protect a Will from being challenged in England and Wales. This guide explains legal grounds for contesting Wills, practical steps to reduce dispute risk, testamentary capacity, execution requirements, the Inheritance (Provision for Family and Dependants) Act 1975, and what to do if a challenge arises. Practical, up‑to‑date and clear for both public and solicitors.

Ensuring a Will is respected after death is a priority for many people. In England and Wales, anyone can make a Will that sets out how their estate should be distributed. However, Wills are sometimes challenged in court because of concerns about how they were prepared, executed, or whether they reflect the true intentions of the person who made them. This article explains how Wills can be challenged and outlines practical steps you can take to reduce the risk of a challenge succeeding. It is intended for members of the public, students and solicitors seeking a clear understanding of the law and practical considerations. It does not provide personalised legal advice.
What Is a Will?
A Will is a legal document in which a person (the testator) states their wishes about who should receive their assets after death. In England and Wales, a Will also enables a testator to appoint executors to manage their estate, name guardians for minor children, and make funeral arrangements.
For a Will to have legal effect, it must meet strict requirements under the Wills Act 1837. These requirements form the starting point for understanding how to protect a Will from challenge.
Grounds on Which a Will Can Be Challenged
A Will can be challenged only on specific legal grounds. Simply disagreeing with the contents of a Will because you do not like them is not enough. The main grounds for challenging a Will include the following:
1. Lack of Testamentary Capacity
The testator must have had the required mental capacity when making the Will. This means they must:
- Understand the nature and effect of making a Will.
- Know the extent of their estate.
- Understand the claims that could be made by those who might expect a share (for example, spouses or children).
If the testator lacked capacity due to illness, dementia, mental disorder, or other reasons, this can form the basis of a challenge.
2. Improper Execution
Under the Wills Act 1837, a Will must:
- Be in writing;
- Be signed by the testator (or by someone in their presence and at their direction);
- Be witnessed by at least two adults present at the same time; and
- Have each witness attest and sign in the presence of the testator.
If formal requirements are not met, the Will may be invalid.
3. Lack of Knowledge and Approval
Even if a Will appears properly signed and witnessed, it may still be challenged if the testator did not understand or approve its contents. This might arise where the testator was unable to read or the document was explained in a misleading way.
4. Undue Influence
If someone exerted pressure on the testator to make or change their Will, this may amount to undue influence, which can invalidate the Will. Claims of undue influence are fact‑specific and often require evidence that the testator's free will was overridden.
5. Fraud or Forgery
A Will that is forged or contains fraudulent elements (for example, a false signature or altered provisions) can be challenged as invalid.
6. Inheritance Act Claims
Separate from challenges to validity, certain people may bring a claim under the Inheritance (Provision for Family and Dependants) Act 1975 if they believe the Will fails to make reasonable financial provision for them. This does not challenge the legal validity of the Will but seeks a redistribution of the estate. Typically, spouses, former spouses, children, cohabiting partners and dependants can apply under this Act.
Practical Measures to Reduce the Risk of a Challenge
Although no approach can guarantee that a Will will never be challenged, the following steps are recognised methods to strengthen a Will and reduce the risk of dispute.
1. Use an Experienced Solicitor
Having a Will drafted by a solicitor experienced in Wills and probate law helps ensure that it meets all legal requirements and reflects the testator's intentions. A solicitor can record attendance notes and discussions, which can be valuable evidence if the Will's validity is questioned.
2. Confirm Testamentary Capacity
In circumstances where the testator is older or has health concerns, arranging a medical assessment close to the date of the Will can provide documentary evidence that the testator had capacity when the Will was made. This can be especially useful if a challenge is later raised on capacity grounds.
3. Meet the Testator Alone
Undue influence claims are more difficult to mount where the testator met the solicitor alone and made their decisions independently. Both solicitor and testator should ensure that beneficiaries are not present during discussions about the Will.
4. Proper Execution and Safe Storage
Ensuring compliance with the formal execution requirements of the Wills Act 1837 as outlined above is essential. The original Will should be stored securely-often with a solicitor or in safe custody-and executors should be informed where it can be found.
5. Regular Review and Update
Major life changes such as marriage, divorce, births, deaths, and acquiring or disposing of significant assets should prompt a review and, if necessary, update to the Will. Outdated Wills can cause uncertainty and increase the likelihood of challenge.
6. Letters of Wishes
A Letter of Wishes accompanying a Will can explain the reasons behind particular decisions, especially in cases where excluded beneficiaries might otherwise feel aggrieved. Although not legally binding, a clear letter can reduce misunderstandings.
7. Consider a No‑Contest Clause
Including a no‑contest or forfeiture clause can deter challenges by stating that a beneficiary who contests the Will forfeits their inheritance. While these clauses are not always enforceable, they can influence the cost‑benefit analysis for potential challengers.
8. Communicate Intentions
Open communication with family members and potential beneficiaries about your intentions and reasons for decisions in your Will can reduce surprises and may prevent disputes before they arise.
Time Limits and Procedural Considerations
The procedure for challenging a Will depends on the type of claim:
- Validity challenges (such as lack of capacity or undue influence) can technically be raised at any time, though in practice claims are normally brought promptly. There is no strict statutory time limit, but courts prefer issues to be raised without undue delay.
- Inheritance Act claims generally must be brought within six months of the grant of probate or letters of administration, though courts have discretion in exceptional cases. Acting promptly and seeking legal advice early improves prospects of managing any dispute effectively.
What Happens If a Will Is Challenged
If a substantive challenge is made, whether to validity or under the Inheritance Act 1975, the claimant must present evidence to support their case. Evidence may include witness statements, medical reports, expert opinions and the solicitor's attendance notes.
If a court finds the Will invalid, the estate will typically be administered according to an earlier valid Will or, if none exists, under the intestacy rules. In Inheritance Act claims, the court may order the estate to be distributed differently to provide reasonable financial provision for the claimant.
Key Takeaways
Protecting a Will from being challenged in England and Wales requires careful attention to both legal formality and practical clarity:
- Understand the grounds on which Wills can be challenged.
- Use professional advice and follow strict formal requirements.
- Consider documenting testamentary capacity and intentions.
- Keep the Will current and communicate decisions when appropriate.
- Be aware of time limits and procedural steps if a dispute arises.
No method can completely eliminate the risk of a challenge, but thorough preparation and clear documentation significantly reduce the likelihood of successful disputes.