What Evidence Do You Need to Contest a Will?

Challenging a Will’s validity is a serious legal issue that can be emotionally taxing and complicated. If you suspect a loved one was coerced into making a Will or think it does not truly represent their wishes, you might be able to contest it with appropriate evidence. Solid legal grounds and supporting documents are essential for a successful challenge, and acting within the right timeframe is crucial. 

This blog post discusses common types of evidence needed, how the probate process influences your options, and answers frequently asked questions about contesting a Will in the UK.

Legal Grounds for Contesting a Will

Before you begin gathering evidence or making a formal challenge, it’s crucial to understand the legal basis on which a Will can be contested. UK law sets out specific grounds under which a Will may be considered invalid, and only those with a legitimate interest in the estate, such as close relatives or financial dependents, have the right to bring a claim.

Disputes often arise when someone feels excluded from a Will or believes that the deceased was not acting freely or with complete understanding when the Will was made. However, personal disappointment or a sense of injustice is not enough — there must be one or more recognised legal grounds for a court to consider overturning or modifying the Will. And, you’ll need a trusted solicitor to hold your hand during this process, whether you are the party contesting the Will, or an Executor of a Will being contested.

Each of the grounds below requires a different kind of evidence and legal approach. Some relate to how the Will was written and signed, while others focus on the deceased’s state of mind or external pressures they may have faced. Knowing which legal ground applies to your situation is the first step in building a strong and valid case with your solicitor.

 Common grounds to contest a Will include:

• Lack of mental capacity (the person was not of sound mind when making the Will)
• Undue influence (the person was coerced or manipulated)
• Lack of valid execution (the Will does not meet legal formalities)
• Fraud or forgery
• Lack of knowledge and approval (the person didn’t understand or agree with what they were signing)
• Claims under the Inheritance (Provision for Family and Dependants) Act 1975.

Once you’ve identified your legal grounds, the next step is to gather appropriate evidence.

What Evidence Do You Need to Contest a Will?

If you are considering challenging a Will, it’s essential to understand that simply feeling the outcome is unfair is not enough. To make a successful claim, you must have solid legal grounds backed by clear, credible evidence. Contesting a Will is a serious matter in UK law, and the courts will only overturn a Will if there is convincing proof that something was legally wrong with how it was made or what it contains.

The burden of proof lies with the person contesting the Will, which means it’s our responsibility to present the court with enough documentation and testimony to support your case. The type and strength of the evidence you gather can determine whether your claim moves forward or fails early on. 

In this section, we’ll break down the main types of evidence courts typically accept in Will disputes, so you understand what to look for and why it matters. Remember, as experienced solicitors, we assist the claimant in accessing important documents; you don’t need to handle this before seeing us. Much of the evidence required can be obtained more quickly and easily through official channels. 

1. Medical Records

To show that the deceased lacked mental capacity at the time the Will was made, medical records are essential. You may need to request access to GP or hospital notes and obtain expert opinions from geriatricians or psychiatrists. If you are not the executor of the Will, their consent will be needed to release any documents, which your solicitor can discuss with the executor or their representative.

It can also be sensible to obtain a retrospective capacity assessment, which can be produced as an official opinion on the testator’s capacity for the court to be presented with. To ensure the assessment covers everything, and it is compliant with the court rules, these are best obtained through instruction of a solicitor.

2. Witness Statements

Testimonies from friends, family members, or carers who knew the deceased well can support claims of undue influence or mental incapacity. Statements may describe the person’s behaviour, changes in personality, or details about how the Will was prepared.

There are set rules governing the format and content that is admissible in witness statements, and to ensure your or anyone else’s statement is compliant, such should be drafted by your solicitor who will be familiar with the rules and drafting of these documents. Anyone providing a statement will also need to sign a statement of truth, which is a serious statement, and legal advice should always be sought before signing such.

3. Previous Wills

Earlier versions of the Will may help demonstrate a sudden and unexplained change in intention, especially if the most recent Will benefits someone unexpected. This can be persuasive when arguing undue influence or fraud.

4. The Will File

Solicitors often keep detailed notes and correspondence from when a Will is drafted. These records can indicate whether the deceased understood the Will and whether they were under any pressure at the time.

These files can only be obtained though making an official Larke v Nugus request, which your solicitor will deal with regularly. Sometimes the Will drafter may insist on an undertaking to pay their costs in preparing the file for release, which your solicitor will be able to provide on your behalf.

5. Expert Reports

Handwriting experts or forensic document analysts may be brought in to detect forgery. A legal expert may also be needed to confirm whether the Will meets formal requirements.

Similarly to a capacity assessment, experts often require a formal instruction letter from a solicitor, and your solicitor will be able to ensure the report is compliance with the court rules on expert evidence.

6. Financial Documents

Bank statements or financial records can help prove that someone had control over the deceased’s finances, which may suggest manipulation or undue influence.

Many of the above detailed documents will also fall into disclosure, being a formal part of the court process, which if done incorrectly, can result in your being penalised or costs, or in proceedings for contempt of court. It is therefore critical you seek legal advice early on the type of documents you need to collate and disclosure regarding your claim.

Can a Will Be Contested After Probate?

Yes, a Will can be contested after probate has been granted, but it becomes more challenging. Probate is the legal process by which a Will is validated and the estate is distributed among beneficiaries. Once the grant of probate is issued, Executors can begin distributing assets according to the Will.

If you wait until after probate is granted, you’ll need to act quickly — especially if estate assets have already been distributed. The court may freeze the distribution temporarily or reverse it, but this becomes harder with time.

To avoid complications, it’s best to enter a “caveat” before probate is granted. A caveat prevents the probate registry from issuing a grant, giving you time to investigate and prepare your claim.

How Long Do You Have to Contest a Will?

The time limit for contesting a Will depends on the type of claim:

• Under the Inheritance Act (1975) — Six months from the date probate is granted.
• For fraud — No time limit.
• For lack of capacity, undue influence, or invalid execution — Ideally, before probate is granted. Technically, there’s no strict deadline, but the longer you wait, the harder it becomes to challenge. If you have concerns, your solicitor can enter a caveat to stop probate being granted. This has a clear process and time limits, which your solicitor will manage to ensure nothing is missed.
• For rectification claims — Six months from probate.

If you’re outside these timeframes, you may still bring a claim, but you’ll need the court’s permission and must show strong justification for the delay.

Do You Need a Solicitor to Contest a Will?

Contesting a Will involves strict legal procedures, complex evidence and emotional dynamics. It’s not something to navigate alone, so you will want to get a lawyer. A contentious probate solicitor can:

• Assess the strength of your claim.
• Help gather and present the necessary evidence.
• Ensure all deadlines are met.
• Negotiate with executors or beneficiaries
• Represent you in mediation or court proceedings

Attempting to contest a Will without legal support can lead to costly mistakes — and may even result in a court order requiring you to pay the other side’s legal fees.

Final Thoughts

The evidence you need to contest a Will depends on your reason for challenging it. In all cases, you’ll need clear, credible proof and swift action with the help of a probate solicitor. Whether you’re contesting on grounds of undue influence, lack of capacity or financial dependence, gathering medical records, witness statements and previous Wills can be critical. While a Will can be contested after probate, it’s much better to act early.

If you’re concerned about the validity of a loved one’s Will, our experienced probate solicitors are here to help. Get in touch today; ring us on 01273 604123, email enquire@bbc-law.co.uk or make an enquiry for confidential advice and support.