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.
·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.