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 contest a will for mistakes in England and Wales. This guide explains legal grounds for challenges, steps for contesting due to drafting errors and ambiguity, procedural requirements, time limits, practical evidence gathering, and alternatives like rectification and Inheritance Act claims.
A will is a legal document expressing a person's wishes about how their property and assets should be distributed after death. In England and Wales, a will must meet strict legal requirements and accurately reflect the testator's intentions. Mistakes, whether they relate to drafting errors, ambiguity, improper execution, or misunderstandings of intent, can lead to disputes and legal challenges. This article explains how such mistakes may give rise to a contest, the legal grounds and processes involved, practical steps for prospective challengers, and common questions about pursuing a challenge.
What Does It Mean to Contest a Will for Mistakes?
To contest a will means to formally challenge its validity or contents on recognised legal grounds. In the context of mistakes, contesting typically involves arguing that the will as drafted or executed does not accurately record the testator's instructions, contains errors that undermine its operation, or was not validly made under statutory rules. Mistakes might include:
- Errors in drafting that change who inherits or how assets are distributed.
- Ambiguous or unclear wording that causes uncertainty about meaning.
- Improper formalities in execution that render the will invalid.
- Cases where the testator did not properly understand or approve the content.
A contest may seek to invalidate all or part of a will, ask the court to interpret ambiguous terms, or apply for rectification, where legislation allows the court to correct mistakes to reflect the testator's true intentions.
Legal Grounds for Contesting a Will
There are several recognised legal grounds on which a will may be contested in England and Wales:
1. Lack of Testamentary Capacity
The testator must be of sound mind when making a will. If evidence shows they lacked mental capacity - for example due to dementia or other conditions - the will may be invalid. The legal test derives from the established case of Banks v Goodfellow.
2. Lack of Knowledge and Approval
Even if legally executed, a will must be understood and approved by the testator. If a testator did not know the contents of the document or did not appreciate its effect - for example because it was not properly explained - this may give rise to a challenge.
3. Undue Influence or Duress
A will may be challenged if someone exerted pressure or coercion on the testator to include or exclude specific terms. This requires evidence that free will was compromised. Simple persuasion or reminder of obligations, without coercive intent, is not sufficient.
4. Improper Execution
The Wills Act 1837 sets out formal execution requirements: the will must be in writing, signed by the testator (or on their behalf in their presence), and witnessed by two independent witnesses present together. Failure to meet these formalities may invalidate the will.
5. Fraud or Forgery
If a will has been forged or fraudulently altered, it can be contested. For example, a fake signature or deliberate misrepresentation of facts to influence the testator's decisions may render it invalid.
6. Rectification and Construction Claims
Where mistakes in drafting lead to errors or ambiguity, the court can interpret (construction) or correct (rectification) the will under provisions such as sections 20 and 21 of the Administration of Justice Act 1982 where evidence shows the will does not reflect the testator's true intentions.
Steps to Contest a Will for Mistakes
1. Review the Will and Evidence of Mistake
Begin by obtaining a copy of the will and any relevant drafts, solicitor notes, or correspondence that might show what the testator intended. This can help identify factual errors, ambiguous wording or drafting mistakes.
2. Seek Specialist Advice
A solicitor with expertise in contentious probate can assess whether you have viable grounds to contest the will and advise on the most appropriate legal route. Early legal input increases the likelihood of identifying the correct remedy.
3. Consider Entry of a Caveat
If probate has not yet been granted, entering a caveat at the Probate Registry can delay the grant of probate and preserve your opportunity to contest.
4. Gather Evidence
Evidence might include medical records (for capacity), witness statements about the will's signing, drafts compared to the final document, and expert reports on handwriting or interpretation.
5. Initiate Legal Proceedings
Depending on your grounds, proceedings might involve:
- A direct challenge to the will's validity in the civil courts.
- A rectification application to correct mistakes under the Administration of Justice Act 1982.
- A construction application where wording is ambiguous and requires interpretation.
6. Alternative Claims
If the will is valid but makes inadequate provision, eligible individuals may bring a claim under the Inheritance (Provision for Family and Dependants) Act 1975 for reasonable financial provision. This is a separate claim from contesting the validity of the will itself.
Time Limits and Practical Considerations
There are no strict statutory time limits for many grounds of contesting a will, but delays can significantly affect evidence gathering and prospects of success. For rectification claims, strict timelines normally apply (e.g., six months from the grant of probate, unless extended with permission).
Contesting a will can be complex, costly, and emotionally charged. Careful assessment of the strength of evidence and likelihood of success is essential before proceeding. Failing to pursue legitimate grounds promptly can result in decisions that cannot be easily reversed later.
Common Questions About Mistake-Based Will Contests
Can a simple drafting error invalidate a will?
A drafting mistake does not automatically invalidate a will. If the error does not affect legal formalities, the will may still be valid. However, where the mistake alters meaning or reflects a failure to carry out instructions, rectification or construction may be sought.
What if the mistake was by the solicitor?
Errors by a professional will drafter may give rise to a professional negligence claim for losses suffered due to incorrect drafting, in addition to or instead of contesting the will itself.
Is there a difference between contesting and disputing a will?
Contesting focuses on legal invalidity or errors in execution or content. Disputing may include other civil claims such as under the 1975 Act for inadequate provision.
Conclusion
Contesting a will for mistakes in England and Wales involves identifying legal grounds such as lack of capacity, improper execution, ambiguity, or drafting errors that cause a will not to reflect the testator's true intentions. Remedies may include challenging validity in the courts, seeking rectification or construction, or pursuing alternative claims like those under the Inheritance (Provision for Family and Dependants) Act 1975. Successful contests require careful evidence gathering, prompt procedural steps, and specialist legal advice. Understanding the legal framework and risks involved helps interested parties make informed decisions about whether and how to challenge a will for mistakes.
