Can anyone contest a will UK?

No, only certain people have standing: those named in the will, those named in a previous will, spouses/civil partners, children and financially dependent stepchildren, cohabitees who lived with deceased 2+ years, and anyone the deceased was maintaining. You also need valid legal grounds.

What are the grounds for contesting a will UK?

Valid grounds: the deceased lacked mental capacity, the will wasn't properly executed, undue influence or coercion, fraud or forgery, the deceased didn't know/approve contents, or reasonable financial provision wasn't made for dependants (Inheritance Act claims).

How long do you have to contest a will UK?

For claims under Inheritance Act 1975 (inadequate provision): 6 months from grant of probate. For invalidity claims: no strict limit but act quickly — becomes harder once estate distributed. Probate caveats can pause things while investigating.

How much does it cost to contest a will UK?

Highly variable: £3,000-£10,000 for straightforward cases, £10,000-£50,000+ for contested matters, potentially £100,000+ if going to full trial. Costs can exceed inheritance value. Many solicitors offer initial advice on a fixed fee basis. Consider if it's worth it financially and emotionally.

Money & Budgeting

Contesting a Will UK — When and How to Challenge

Guide to contesting a will in the UK. Grounds for challenging, who can contest, the legal process, costs, and what to consider before taking action.

By PocketWise · 24 March 2026 · 5 min read

Contesting a will is serious and costly. Here’s when it’s possible and whether it’s worth it.

Who Can Contest a Will

People With Standing

Category	Can Contest
Spouse/civil partner	Yes
Former spouse (not remarried)	Yes
Children	Yes
Stepchildren (if dependent)	Yes
Cohabitees (2+ years)	Yes
Anyone being maintained	Yes
Anyone named in will	Yes
Anyone in previous will	Yes

People Who Can’t Contest

Category	Standing
Friends	No (unless in will)
Business partners	No (unless in will)
Charities	Only if named
Anyone else	Need specific ground

Grounds for Contesting

Invalidity Grounds

Ground	What It Means
Lack of mental capacity	Didn’t understand what they were doing
Improper execution	Not properly signed/witnessed
Undue influence	Pressured into making the will
Fraud/forgery	Will is fake or falsified
Lack of knowledge	Didn’t know/approve contents

Inadequate Provision (Inheritance Act 1975)

Ground	Claim
Reasonable financial provision	Not made for dependant
Who can claim	Spouse, children, cohabitees, dependants
Court decides	What’s reasonable in circumstances

What “Mental Capacity” Means

Requirement	Deceased Must Have Understood
Nature of making a will	What a will does
Extent of estate	Roughly what they owned
Claims on estate	Who might expect to benefit
Free of delusion	Not affected by mental disorder

The Two Types of Claim

1. Will Invalidity

Aim	To prove the will isn’t valid
Effect if successful	Will set aside; earlier will or intestacy applies
Standard of proof	Balance of probabilities
Burden	Usually on person challenging
Time limit	None, but act quickly

2. Inheritance Act Claim

Aim	Get reasonable financial provision
Effect if successful	Court orders provision for you
Not challenging will	Will remains valid
Must show	Inadequate provision for your needs
Time limit	6 months from probate

Before You Contest

Questions to Ask

Question	Consider
Do I have standing?	Legal right to contest
Do I have grounds?	Valid legal basis
Is the estate worth it?	Value vs costs
What evidence do I have?	Can I prove my case?
What do I really want?	Money? Recognition?
Family consequences?	Relationships

Is It Worth It Financially?

Estate Value	Contest Cost	Worth It?
£20,000	£10,000+	Probably not
£100,000	£15,000+	Maybe
£500,000+	£30,000+	More likely

Emotional Cost

Factor	Consider
Family relationships	Often irreparably damaged
Stress	Legal battles are draining
Time	Months or years
Uncertainty	Outcome not guaranteed
Public	Some details become known

The Process

Step 1: Initial Investigation

Action	Purpose
Get copy of will	Review provisions
Review earlier wills	See changes
Gather evidence	Medical records, witnesses
Consult solicitor	Assess strength of case

Step 2: Enter a Caveat

What It Does	Stops probate being granted
Duration	6 months, can be extended
Cost	£3 at Probate Registry
Purpose	Prevents estate distribution
Effect	Buys time to investigate

Step 3: Pre-Action Protocol

Requirement	Details
Letter before claim	Sets out your case
Try to settle	Negotiation encouraged
Share evidence	Proportionate disclosure
Mediation	Often required

Step 4: Court Proceedings

If No Settlement	Court
Issue claim	Start formal proceedings
Disclosure	Share documents
Witness statements	Give evidence
Trial	If still not settled
Judgment	Court decides

Costs

Typical Legal Costs

Stage	Cost Range
Initial advice	£500-£1,500
Investigation	£2,000-£5,000
Pre-action work	£3,000-£10,000
If court proceedings	£10,000-£50,000+
Full trial	£50,000-£150,000+

Who Pays?

Outcome	Costs Rule
You win	May recover some costs
You lose	May pay other side’s costs
Settlement	Often each pays own
Part success	Costs apportioned

Cost Protection

Option	Details
ATE insurance	After the event cover
CFA/No win no fee	Some cases qualify
Legal aid	Rarely available
Fixed fee initial advice	Assess before committing

Evidence You’ll Need

For Mental Capacity Claim

Evidence	Purpose
Medical records	Diagnosis of conditions
GP notes	Around time will made
Care home records	If applicable
Witness statements	Behavior at the time
Expert medical opinion	Retrospective assessment

For Undue Influence

Evidence	Purpose
Witness statements	Who was around
Previous wills	Pattern of changes
Dependency evidence	Reliance on influencer
Isolation evidence	Cut off from family
Financial control	Who managed money

For Inheritance Act

Evidence	Purpose
Your financial needs	Income, capital
Deceased’s obligations	What they should have done
Estate value	What’s available
Your circumstances	Why you need provision
Others’ claims	Competing needs

Alternatives to Court

Negotiation

Approach	Details
Direct discussion	With executors/beneficiaries
Solicitor negotiations	Formal correspondence
Early settlement	Often best outcome
Deed of Variation	Beneficiaries can agree changes

Mediation

Feature	Details
Neutral mediator	Helps reach agreement
Confidential	Unlike court
Quicker	Usually one day
Cheaper	Than litigation
Success rate	About 70% settle

Family Arrangement

Method	Details
Deed of Variation	Beneficiaries agree different distribution
All must agree	Can’t force
Tax neutral	If done within 2 years
Flexible	Whatever everyone agrees

Summary: Contesting Checklist

Before Proceeding

Question	Answer
Do I have standing?	☐ Yes ☐ No
Do I have grounds?	☐ Yes ☐ No
Do I have evidence?	☐ Yes ☐ No
Is it financially worth it?	☐ Yes ☐ No
Have I considered alternatives?	☐ Yes ☐ No
Am I prepared for family fallout?	☐ Yes ☐ No

Key Time Limits

Action	Deadline
Inheritance Act claim	6 months from probate
Enter caveat	Before probate granted
Respond to caveat warning	14 days

Process Steps

Step	Done
Get legal advice	☐
Enter caveat (if needed)	☐
Gather evidence	☐
Try negotiation	☐
Consider mediation	☐
Court proceedings (last resort)	☐

Find a Solicitor

Look For	Why
Contentious probate specialist	Specific expertise
STEP member	Estate planning knowledge
Clear costs estimate	Know what you’re facing
Realistic advice	Not just what you want to hear

Contesting a will should be a last resort. The process is expensive, stressful, and damages family relationships permanently. Consider carefully whether the potential gain justifies not just the money, but everything else you’ll spend on it.

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Sources

GOV.UK — Making a will