Discovering that a will excludes you, leaves an unexpectedly small gift or appears to have been made under suspicious circumstances can be deeply unsettling. However, disliking the outcome is not enough to overturn it. Contesting a will in the UK usually means either challenging its legal validity or asking the court for reasonable financial provision from the estate.
The distinction matters because the evidence, eligible claimants and deadlines differ. The rules also vary across England and Wales, Scotland and Northern Ireland. Most of the guidance below concerns England and Wales.
Validity challenge or financial provision claim?
A validity challenge argues that the document should not operate as the deceased’s will. If successful, an earlier valid will may take effect, or the estate may pass under intestacy rules.
An inheritance act claim accepts that the will may be valid but argues that it failed to make reasonable financial provision for an eligible person. The court can alter the distribution without declaring the will invalid.
Legal grounds for contesting a will
The will was not properly signed or witnessed
In England and Wales, a standard will must be in writing, signed with the intention of giving it effect and witnessed according to statutory formalities. A defect can make it invalid, although witness evidence may explain an apparent error.
The person lacked testamentary capacity
The person making the will must have understood that they were making a will, the broad extent of their property and the people who might reasonably expect consideration. Dementia does not automatically prove incapacity. Evidence commonly includes medical records, the solicitor’s file and accounts from people who saw the deceased near the signing date.
The person did not know and approve the contents
This ground may arise where someone signed without understanding the document, another person prepared it in suspicious circumstances, or the text differed from the instructions given. An unusual gift alone does not prove a problem.
Undue influence or coercion
An undue influence will claim alleges that pressure overpowered the deceased’s free choice. Persuasion or repeated requests are not necessarily enough. Sudden isolation, threats, dependency, unexplained changes and a major beneficiary’s involvement in drafting may require investigation.
Fraud, forgery or revocation
A signature or document may be forged, information deliberately concealed, or a later valid will may have revoked the version being used. Handwriting analysis, digital records and the drafting history can become important.
Who can bring a will dispute?
A person challenging validity will generally need a genuine financial interest, such as benefiting under an earlier will or under intestacy if the disputed will fails.
For an inheritance act claim in England and Wales, eligible applicants include a spouse or civil partner, certain former spouses or civil partners, children, people treated as children of the family, qualifying cohabitants and people maintained by the deceased. Eligibility does not guarantee an award. The court considers needs, resources, the estate’s size, obligations owed by the deceased, disabilities and beneficiaries’ interests.
Time limits that can decide the case
Caveats must be entered before probate is granted
If there is a genuine validity dispute, a caveat can stop a grant of probate in England and Wales. It initially lasts six months and can be extended. A caveat is a protective measure, not a completed court claim, and using one without proper grounds can create costs.
Inheritance act claims normally have six months
An application under the Inheritance (Provision for Family and Dependants) Act 1975 normally must be made within six months from the grant of representation. A court can permit a late claim, but permission is discretionary. Specialist advice should be obtained before the deadline, even if negotiations are underway.
Validity disputes have no single six-month rule
A validity challenge is not governed by the same six-month deadline. Delay is still risky. Once assets are distributed, recovery may become harder, evidence may deteriorate and the court may consider the claimant’s conduct.
A practical example
Suppose a widower made a new will three weeks before his death, replacing an equal division between his children with a gift of almost everything to a neighbour. One child suspects undue influence because the neighbour arranged the appointment and joined discussions.
The child should first check whether probate has been granted, preserve relevant messages and obtain advice about a caveat. A solicitor may seek the will writer’s notes, witness evidence, medical records and earlier wills. Those materials might support a claim, reveal a capacity concern or show that the deceased made an independent decision.
How the position differs across the UK
Scotland has a separate succession system. A surviving spouse or civil partner and children may have legal rights in the deceased’s moveable estate even when a valid will says otherwise. This can create an entitlement without invalidating the will.
Northern Ireland also has separate probate procedures and family-provision rules. A caveat there initially lasts six months and may be renewed. Advice should come from a solicitor qualified in the jurisdiction where the estate is being administered.
Evidence and early action
Useful evidence can include the signed will, earlier wills, the drafting file, medical records, witness accounts, correspondence, financial records and proof of dependency. Executors should be told of a credible dispute before distribution, but potential claimants should not access private accounts or remove documents without authority.
Many cases settle through correspondence or mediation. Settlement can preserve estate value, but terms should be documented properly and tax consequences considered. Court proceedings carry significant cost risk, particularly where the estate is modest.
Related reading opportunities include how probate works in the UK, what happens when someone dies without a will, and making a legally valid will.
Frequently asked questions
Can a will be challenged simply because it seems unfair?
No. An unequal or surprising distribution is not automatically invalid. A claimant needs a recognised legal basis, although an eligible family member or dependant may separately consider an inheritance act claim.
Can probate continue while a will is disputed?
It may continue unless a valid procedural step stops the grant. In England and Wales, a caveat entered before the grant can pause the probate application.
What happens if a will is declared invalid?
The estate normally passes under the most recent earlier valid will. If there is none, intestacy rules determine who inherits.
Do all UK will challenges have the same deadline?
No. Deadlines depend on the claim and jurisdiction. The six-month limit for an inheritance act claim in England and Wales differs from a validity challenge, while Scotland and Northern Ireland apply separate rules.
Choose the correct route quickly
A successful will dispute begins with identifying the correct legal route, not with the strength of someone’s disappointment. Validity challenges require evidence of a recognised defect, while financial-provision claims depend on eligibility, need and strict timing. Early specialist advice can preserve evidence, protect the estate and prevent a deadline from deciding the outcome before the merits are considered.