If you are searching for information on how to sue for a data breach, there is a strong chance that your personal information has already been exposed, shared without permission or accessed by the wrong person. This can be an extremely stressful experience, particularly where financial details, medical records or other sensitive data are involved. Many people affected by a personal data breach worry about financial loss, emotional distress, and the loss of control over their private information. Fortunately, the data protection laws in the UK give people the right to seek compensation in certain circumstances.
A data breach compensation claim could be made if an organisation failed to properly protect personal data and this caused financial harm, and/or psychological injury. This may include breaches caused by human error, cyberattacks, unauthorised access, the use of the wrong email address, or documents being sent to the wrong recipient. Claims can often include compensation for both financial losses and psychological harm, such as anxiety or stress.
A solicitor from How To Sue’s panel could assess whether there are grounds to claim compensation, gather supporting evidence and handle the data breach claims process on a No Win No Fee basis. Contact How To Sue today for free advice and find out how our panel can help you pursue the compensation you deserve.
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Here at How To Sue, our expert advisors are on hand 24 hours a day 7 days a week to assess your compensation claim. Should you require free legal advice we can connect you to a specialist solicitor.
Jump To A Section
- How To Sue For A Data Breach
- Who Is Responsible For A Breach Of Personal Data?
- What Steps Should An Organisation Take After A Data Breach?
- What Types Of Data Could Be Compromised In A Breach?
- Examples Of Organisations That Might Hold Personal Data
- How Might A Data Breach Occur?
- The Impacts Of A Data Breach
- How Can I Protect Myself After My Data Is Breached?
- How Much Data Breach Compensation Can I Sue For?
- Can I Sue For Material Damage After A Data Breach?
- The Step By Step Process On How To Sue For A Data Breach
- What Evidence Will I Need To Prove A Data Breach Occurred?
- What Is The Role Of The ICO In Data Breach Claims?
- Why Choose A Solicitor From How To Sue’s Panel For A Data Breach Compensation Claim?
- Can I Sue For A Data Breach On A No Win No Fee Basis?
- Data Breach FAQS
- Learn More
How To Sue For A Data Breach
A person can sue for a data breach if an organisation failed to protect personal data and this caused financial loss and/or emotional harm. Organisations that handle personal data must follow the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018. If they fail to comply with data protection law and a personal data breach occurs, causing harm, affected individuals have the legal right to seek compensation.
Before you can think about suing for a data breach, you need to know what one is. A data breach is defined as a security incident involving personal data being accessed, disclosed, lost, destroyed or shared without authorisation. Many data protection breaches happen because of human error, weak security systems or failures in staff training.
The organisation that decides how and why personal data is used is known as the data controller. This could be a hospital, employer, bank or local authority. A data processor is a separate organisation that processes data on behalf of the data controller, such as an outsourced payroll company, cloud storage provider or IT support company. Both a data controller and data processor have legal responsibilities under data protection legislation and may be held liable if their wrongful conduct caused the breach.
However, you need to meet the eligibility criteria to sue for a compromise of your data. To make a valid data breach claim, the claimant must show:
- A personal data breach occurred that included data that could identify you as the subject
- The organisation failed to comply with data protection legislation
- Harm was suffered because of the breach
Settlements can include compensation for material damage, such as financial losses, and non-material damage, including emotional distress and psychological injuries.
Contact How To Sue today to find out whether there are grounds to claim data breach compensation.
We are here to help you
Here at How To Sue, our expert advisors are on hand 24 hours a day 7 days a week to assess your compensation claim. Should you require free legal advice we can connect you to a specialist solicitor.
Who Is Responsible For A Breach Of Personal Data?
The organisation responsible for deciding how personal data is used is generally responsible for a breach of personal data. In many cases, this will be the data controller. If a data processor handling information on behalf of another organisation caused the breach, they could also share responsibility.
Under data protection laws, organisations must use appropriate security measures to protect personal data. If they fail to meet these standards and the breach results from this, affected individuals could seek compensation.
Responsibility for a breach will depend on:
- Who controlled the personal data
- How the breach occurred
- Whether appropriate security measures were in place
- Whether data protection legislation was breached
Can Multiple Parties Be Sued For A Data Breach?
Multiple parties can be sued for a data breach where more than one organisation was responsible for handling or protecting personal data. A data breach compensation claim may involve both a data controller and a data processor if their failures contributed to the breach. Liability will depend on each party’s role in the handling, processing or security of the compromised data.
For example, a hospital may use an external IT company to manage patient systems. If poor cybersecurity and inadequate monitoring both contributed to a data leak involving medical records, both parties could potentially face a legal claim.
Identifying every organisation responsible is important because it can affect how compensation is pursued and who pays compensation.
Contact How To Sue today for advice on whether multiple parties could be liable for a data breach compensation claim.
What Steps Should An Organisation Take After A Data Breach?
An organisation must take specific steps after a data breach to contain it, protect personal data and comply with data protection law. Under data protection laws, organisations are required to investigate the breach, reduce the risk of further harm and notify affected individuals and the Information Commissioner’s Office (ICO) where necessary. The ICO, or Information Commissioner’s Office, is the UK’s independent authority responsible for enforcing data protection laws and protecting personal information.
Organisations that fail to take the correct steps after a personal data breach may increase the harm suffered. An organisation should:
- Investigate the breach immediately
- Contain the breach and secure systems
- Inform affected individuals where necessary
- Report the breach to the Information Commissioner’s Office within 72 hours if required
- Keep records of the breach and corrective action taken
Contact How To Sue today if an organisation failed to respond properly after a personal data breach. You could be entitled to compensation.
What Types Of Data Could Be Compromised In A Breach?
Many types of personal data could be compromised in a breach, including financial information, contact details and other private records used to identify an individual. A personal data breach can expose information that organisations are legally required to protect. If this information is accessed, disclosed or shared without authorisation, affected individuals may have the right to seek compensation.
Examples of personal data that could be compromised include:
- Names
- Home addresses
- Email addresses
- Telephone numbers
- Bank account information
- Employment records
- National Insurance numbers
The more sensitive the data, the greater the potential impact on the affected person. Breaches involving special category data often lead to more serious consequences.
What Is Classed As Special Category Data?
Special category data is information that needs extra protection because it is particularly sensitive. Organisations must have strong safeguards in place when processing this type of data.
Examples include:
- Racial or ethnic origin
- Political opinions
- Religious beliefs
- Trade union membership
- Genetic data
- Biometric data used for identification
- Health records
- Information about a person’s sex life or sexual orientation
A breach involving special category data can cause serious emotional distress, reputational damage and mental harm. This may increase the value of a data protection breach compensation claim.
Contact How To Sue today if special category data was exposed in a personal data breach. One of the advisors can explain your next steps.
Examples Of Organisations That Might Hold Personal Data
Many organisations might hold personal data as part of their day-to-day operations, including businesses, public bodies and service providers. Organisations that collect, store or handle personal data are responsible for keeping that information secure and protecting it from unauthorised access or disclosure. If an organisation fails to protect personal data properly and a breach occurs, affected individuals may have the right to seek compensation.
Examples of organisations that might hold personal data include:
- Schools and colleges
- NHS trusts and private hospitals
- GP surgeries and dental practices
- Employers
- Banks and mortgage providers
- Retailers and online businesses
- Utility companies
- Local authorities
- Government departments
- Insurance providers
- Solicitors and accountants
These organisations may store financial information, contact details, employment records and other forms of personal data. The amount and type of information held will often depend on the services the organisation provides.
Contact How To Sue today to discuss whether an organisation that held personal data could be liable for a data breach compensation claim.
How Might A Data Breach Occur?
A data breach can occur in many ways, including through human error, poor security measures and unlawful access to personal data. Organisations that fail to handle personal data securely may expose sensitive information to unauthorised individuals, leading to financial harm, emotional distress and other serious consequences. Many personal data breaches happen because organisations do not have appropriate systems, training or procedures in place to protect the information they hold.
Examples include:
- Posting documents to the wrong address
- Using the wrong email address
- Failing to encrypt sensitive data
- Losing unencrypted devices
- Weak password protection
- Poor staff training
- Allowing unauthorised access to systems
- Failing to update cybersecurity software
For example, a hospital sending medical records to the wrong postal address or an employer emailing payroll data to the wrong recipient could both result in a personal data breach.
Speak with one of our advisors to discuss how your personal data was compromised and how to sue for a data breach.
The Impacts Of A Data Breach
A data breach can have serious impacts on a person’s finances and emotional wellbeing. When personal data is exposed or accessed without authorisation, affected individuals may experience ongoing stress, anxiety and concern about how their information could be used. The impact of a personal data breach will often depend on the type of data involved and how widely it was exposed.
Common impacts of a data breach include:
- Financial loss
- Anxiety and depression
- Sleep problems
- Stress caused by loss of control over personal information
- Concerns about future misuse of personal data
Compensation may be awarded for both financial losses and the emotional impact caused by the breach.
The advisory team can assess your situation and advise on how to sue for a data breach as well as look at what items you could claim for.
How Can I Protect Myself After My Data Is Breached?
A person can protect themselves after their data is breached by taking immediate steps to secure accounts and reduce the risk of further harm. Acting quickly after a personal data breach may help limit financial loss, prevent unauthorised access and provide greater control over compromised information. The steps taken will often depend on the type of personal data involved and how the breach occurred.
Recommended steps include:
- Change passwords immediately
- Enable two-factor authentication
- Contact banks to monitor accounts or replace cards
- Check credit reports regularly
- Monitor accounts for unusual activity
- Keep copies of breach notifications and correspondence
- Report concerns to the organisation responsible
- Seek legal advice about a potential compensation claim
Taking proactive action after a data breach may also help reduce ongoing stress and concerns about the misuse of personal data.
Speak to an advisor for guidance on protecting personal data and pursuing a data breach compensation claim.
How Much Data Breach Compensation Can I Sue For?
How much data breach compensation a person could sue for will depend on the severity of the psychological harm suffered and any financial losses caused by the breach. Compensation in data breach claims can cover both material damage, such as financial loss, and non-material damage, which includes emotional distress, psychological harm and mental health symptoms caused by the exposure of personal data.
Legal professionals often refer to the Judicial College Guidelines (JCG) when valuing compensation for psychological injuries in data breach compensation claims. The JCG provides guideline compensation brackets for different levels of psychiatric harm and post-traumatic stress disorder (PTSD).
Below are some examples of compensation guidelines that may apply in data breach compensation claims. Please note that the first entry has not come from the JCG.
| Psychological Harm | Notes | Compensation Guidelines |
|---|---|---|
| Severe Mental Harm with Material Damage | Settlements may recover compensation for severe non-material damage and related costs, including relocation, security and therapy expenses. | Up to £250,000 |
| Severe Psychiatric Damage | Marked issues with future vulnerability and coping with life, and a very poor prognosis. | £72,440 to £152,900 |
| Moderately Severe Psychiatric Damage | Still significant issues, but the prognosis is better than that of the above. | £25,190 to £72,440 |
| Moderate Psychiatric Damage | Marked improvements have been made and the prognosis is good. | £7,740 to £25,190 |
| Less Severe Psychiatric Damage | Impact on sleep and daily activities are taken into consideration. | £2,040 to £7,740 |
| Severe PTSD | Permanent effects stop the person from functioning as they did before. | £79,080 to £133,000 |
| Moderately Severe PTSD | A better prognosis with some recovery with professional help. | £30,580 to £79,080 |
| Moderate PTSD | A large recovery will have been made. | £10,810 to £30,580 |
| Less Severe PTSD | A virtually full recovery within 1 to 2 years. | £5,220 to £10,810 |
One of our advisors can go through the mental harm you suffered and give an estimate of how much data breach compensation you could claim.
Can I Sue For Material Damage Compensation After A Data Breach?
Yes, you could sue for material damage compensation after a data breach if the compromise caused financial losses or expenses linked to the exposure of your personal data. Material damage in a data breach claim refers to the direct financial impact caused by the breach and can be claimed alongside compensation for psychological harm, or on its own. If an organisation failed to protect personal data properly and this resulted in financial harm, affected individuals may have the right to seek compensation.
Examples of material damage after a personal data breach may include:
- Lost earnings
- Therapy or counselling costs
- Home security expenses
- Relocation costs
- The cost of any medication to cope with your psychological harm
A friendly advisor can discuss what items you should save to prove your material damage. You will need evidence, such as your bank statements or receipts, to be compensated for your financial losses.
The Step By Step Process On How To Sue For A Data Breach
The step-by-step process on how to sue for a data breach involves following the relevant Pre-Action Protocol, exchanging information with the organisation responsible and attempting to resolve the dispute before court proceedings begin. Data breach claims must follow the Pre-Action Protocol for Media and Communications Claims, which encourages parties to understand each other’s position, exchange relevant information early and consider settlement before litigation.
The Pre-Action Protocol steps in a data breach claim will include:
- The claimant sends a detailed Letter of Claim to the organisation responsible, setting out the facts of the claim. It should include what personal data was breached, who the data controller was, and what harm was suffered.
- The organisation responsible acknowledges receipt of the Letter of Claim within 14 days. The response should state whether the claim is accepted, if more information is required, or if it is rejected and why.
- Both parties should consider whether an alternative dispute resolution procedure could enable them to settle the dispute without commencing court proceedings.
- Where the above is unsuccessful, the claim will move to court.
Following the correct Pre-Action Protocol is important because the court expects parties to act reasonably, exchange information early and attempt to resolve disputes before litigation becomes necessary.
What Evidence Will I Need To Prove A Data Breach Occurred?
The evidence needed to prove a data breach occurred will include documents showing how personal data was compromised, how the organisation responded and the harm caused by the breach. Strong evidence can help demonstrate that personal data was exposed because the organisation failed to comply with data protection law.
Examples of evidence that may support a data breach compensation claim include:
- A data breach notification letter or email from the organisation
- Copies of complaints made to the organisation and any responses received
- Findings or correspondence from the Information Commissioner’s Office
- Financial records showing losses or expenses connected to the breach
- Medical records confirming psychological harm or mental health symptoms
Keeping copies of all correspondence and documents linked to the breach may help strengthen a data breach compensation claim.
To discuss what evidence you can collect to support your data breach claim, speak to a member of How To Sue’s advisory team.
What Is The Role Of The ICO In Data Breach Claims?
The role of the ICO in data breach claims is to regulate data protection law, investigate data breaches and take action against organisations that fail to protect personal data. The ICO is the UK’s independent authority for data protection and has powers to investigate complaints, issue enforcement action and fine organisations that breach data protection legislation. While the ICO does not award compensation, its findings may support a data breach compensation claim and help show that an organisation failed to comply with its legal responsibilities.
In many cases, individuals should complain to the organisation responsible before escalating concerns to the ICO.
Discuss whether ICO involvement could support a data breach compensation claim with an advisor. If it can, they can talk you through reporting the incident.
Why Choose A Solicitor From How To Sue’s Panel For A Data Breach Compensation Claim?
Choosing a solicitor from How To Sue’s panel for a data breach compensation claim could help you understand your legal rights, strengthen your case and pursue compensation more effectively. Data breach claims can involve complex issues relating to data protection law, psychological harm and financial losses, so having experienced legal representation could make the claims process less stressful. A solicitor from the panel could handle your claim from start to finish while helping you build the strongest possible case.
A solicitor from How To Sue’s panel could help you by:
- Assessing whether you have grounds for a valid data breach claim
- Explaining whether you could claim compensation for financial loss and emotional distress
- Reviewing breach notification letters and ICO correspondence
- Arranging independent medical assessments for psychological harm where required
- Calculating potential compensation for material and non-material damage
- Handling communication with the organisation responsible on your behalf
The panel aims to make the data breach claims process straightforward while helping you pursue the maximum compensation possible.
Contact How To Sue today to speak with an advisor about starting a data breach compensation claim.
Can I Sue For A Data Breach On A No Win No Fee Basis?
Yes, you can sue for a data breach on a No Win No Fee basis with a solicitor from our panel here at How To Sue, provided you have a valid claim.
Our panel of solicitors can offer their services under a Conditional Fee Agreement (CFA), which is a type of No Win No Fee arrangement. This means you could seek compensation for financial loss and/or emotional distress without the financial pressure of hiring legal representation.
The benefits of making a data breach claim on a No Win No Fee basis include not paying for your solicitors’ fees upfront, as the claim progresses or if you are not awarded compensation following an unsuccessful claim.
If your claim succeeds, your solicitor will deduct a success fee from your compensation. This fee is taken as a legally capped percentage.
Contact How To Sue today to speak with an advisor about starting a No Win No Fee data breach compensation claim. The advisory team could assess your circumstances, explain how to sue for a data breach and connect you with a solicitor from the panel if your case is suitable.
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Data Breach FAQs
Below, we answer some frequently asked questions regarding data breach claims.
Can I Sue For A Data Breach If I Haven’t Lost Any Money?
Yes, you can sue for a data breach if you have not lost any money, provided the breach caused emotional distress, mental harm or psychological injuries. A data breach compensation claim can include non-material damage, which covers the emotional and psychological impact of a personal data breach even where no financial loss was suffered.
How Long Does A Data Breach Claim Take?
The length of time a data breach claim takes will depend on the complexity of the case, the harm suffered and whether the organisation accepts responsibility. Straightforward data breach compensation claims may settle within a few months, while more complex claims can take longer to resolve.
Do I Need To Complain To The Organisation Before Suing?
Yes, you will usually need to complain to the organisation before suing for a data breach, as this gives them an opportunity to investigate the breach and respond to your concerns.
Do I Need A Solicitor To Sue For A Data Breach?
No, you do not need a solicitor to sue for a data breach, but having legal representation could help you understand your rights, value your claim accurately and build a stronger case. A solicitor experienced in data breach compensation claims could also handle negotiations and gather supporting evidence on your behalf.
Do I Need To Report A Data Breach To The ICO Before Claiming?
No, you do not always need to report a data breach to the ICO before claiming compensation, although ICO involvement may support your case in some circumstances. The ICO may investigate the breach, and its findings could help if the organisation denies responsibility or fails to respond properly.
What Happens If The Organisation Denies The Data Breach?
If the organisation denies the data breach, you may still be able to pursue compensation by gathering further evidence and continuing the claims process. A solicitor could investigate the circumstances of the breach, obtain supporting evidence and challenge the organisation’s position through negotiations or court proceedings where appropriate.
Learn More
Learn more about other types of claims that could be made:
- Advice on how to make a personal injury claim.
- Guidance on medical negligence claims.
- Information on suing for a psychological injury within a personal injury claim.
Useful resources:
- Report a data breach to the ICO.
- The cybersecurity breaches survey 2025/26 from Gov.UK
- A list of mental health conditions from the NHS.
Thank you for reading this guide on how to sue for a data breach.