Contesting a Will in England — Probate Caveats, Grounds for Challenge, and What It Costs

Challenging a Will in England is legally possible, but it is not straightforward, it is not cheap, and it is not quick. A contested probate dispute can take two to five years and cost more than the estate is worth. Before embarking on a challenge, a family member needs a realistic assessment of whether grounds exist and what the likely outcome and cost would be.

There are two distinct categories of challenge: attacking the validity of the Will itself, and making a separate financial claim under the Inheritance Act because the Will (or intestacy) does not adequately provide for a dependent.

Grounds for Challenging a Will's Validity

A Will can be challenged on the following grounds:

1. Lack of testamentary capacity
The testator (the person who made the Will) must have had the required level of mental capacity when they signed it: they must have understood the nature of the Will, the extent of their estate, the claims of those who might expect to benefit, and the effect of the Will. Medical evidence of dementia or cognitive decline at the time of signing is relevant, but does not automatically invalidate the Will. Expert evidence from a psychiatrist or neurologist is typically required.

2. Undue influence
If someone exerted pressure on the testator to make or change the Will in a way that did not reflect the testator's own wishes, this can constitute undue influence. This is difficult to prove — courts require evidence that the testator's free will was overborne, not merely that they were influenced or persuaded.

3. Fraud or forgery
If the Will was fraudulently created or the testator's signature was forged. Expert handwriting evidence is typically central to forgery claims.

4. Lack of proper execution
A Will in England must be signed by the testator in the presence of two independent witnesses who also sign. If this formality was not followed, the Will is invalid. This is a factual question rather than a contested one — either the formalities were complied with or not.

5. Knowledge and approval
Even if the testator had capacity and executed the Will correctly, they must have known and approved of its contents. Where a Will was prepared by a beneficiary who stands to gain significantly, courts scrutinise this carefully.

The Probate Caveat

A caveat is a legal block that prevents HMCTS from issuing a Grant of Probate. If you believe there are grounds to challenge a Will, entering a caveat at the Probate Registry is the first formal step.

Effect of a caveat: Immediately and completely stops the probate application. No Grant can be issued while a caveat is active.

Duration: Six months, renewable indefinitely by the person who lodged it (the "caveator").

Cost: A small filing fee (currently £3) payable to HMCTS.

What happens next: The executor can "warn off" the caveat by issuing a formal warning at HMCTS. If the caveator then enters an "appearance" in response, the caveat becomes permanent — it cannot be removed except by consent or by an order of a District Judge or High Court judge. At this point, the matter has effectively become formal litigation.

The caveat is a significant tool. It freezes the entire estate administration. Estate assets cannot be collected or distributed, property cannot be sold, and no one receives anything until the caveat is resolved. This creates leverage for caveators — but also creates significant costs for the estate and all beneficiaries.

A caveat should only be entered if there are genuine and specific grounds to challenge. Entering a caveat purely to delay or obstruct can lead to adverse cost orders against the caveator if the court finds the challenge was without merit.

The Inheritance (Provision for Family and Dependants) Act 1975

A separate type of claim — not challenging the Will's validity but claiming that it (or intestacy) fails to make reasonable financial provision for the claimant — is available under the Inheritance (Provision for Family and Dependants) Act 1975.

Eligible claimants include:

• Surviving spouses and civil partners
• Former spouses and civil partners (who have not remarried)
• Cohabitees who lived with the deceased for at least two years immediately before the death
• Children of the deceased (biological, adopted, or treated as children)
• Anyone financially maintained by the deceased

The court assesses what "reasonable financial provision" means for the specific claimant. For spouses, the standard is higher and considers what they would have received on divorce. For all other claimants, it is limited to maintenance — what is required for their financial needs.

The six-month deadline: Claims under the 1975 Act must be issued in court within six months of the Grant of Probate or Letters of Administration being issued. Applying out of time requires the court's permission and is not guaranteed.

Cost Reality Check

Contentious probate is some of the most expensive civil litigation in England. Both sides typically need specialist contentious probate solicitors. A contested claim taken to trial can cost each party £50,000 to £200,000 in legal fees. Even a claim settled at mediation commonly costs £20,000 to £80,000 per side.

The court has discretion over costs, but the general rule — the loser pays the winner's legal costs — applies. A claimant who launches a challenge without solid grounds can emerge from the process considerably worse off than if they had accepted the Will.

Before entering a caveat or issuing a 1975 Act claim, obtain a frank assessment of the merits from a specialist solicitor. Many offer a free or fixed-fee initial consultation.

The England Estate Settlement Guide covers the escalation triggers for contentious probate, the caveat procedure, 1975 Act eligibility criteria, and the executor's responsibilities when a challenge is mounted. Get the guide

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