Defamation Claim Checklist: Serious Harm and Defences
TL;DR
Defamation law protects reputation but only where “serious harm” is proven under the Defamation Act 2013. Claimants must show that the statement is defamatory, refers to them, and was published. Defendants may rely on truth, honest opinion, or public interest. Strong evidence and legal advice are essential on both sides.
Introduction
Reputation is one of the most valuable assets a person or business can have. When false statements damage that reputation, the law provides a route to seek redress through a defamation claim. However, not every untrue or unpleasant remark qualifies as defamation under UK law. Since the Defamation Act 2013, the bar has been raised: a claimant must show “serious harm” to succeed.
This article outlines a practical checklist for defamation claims, explains the serious harm test, and examines the common defences available to those accused of making defamatory statements.
What Is Defamation?
Defamation occurs when a false statement is made that damages the reputation of an individual, company, or organisation. There are two main forms:
- Libel – defamatory statements in permanent form, such as print, online, or broadcast media.
- Slander – defamatory statements made in a transient form, such as spoken words.
Not every offensive or critical remark amounts to defamation. For a statement to qualify, it must lower the claimant in the eyes of right-thinking members of society, expose them to hatred or ridicule, or cause them to be shunned or avoided.
The Serious Harm Requirement
The most significant development in modern defamation law is the serious harm threshold, introduced by section 1 of the Defamation Act 2013.
- For individuals, the claimant must demonstrate that the publication has caused, or is likely to cause, serious harm to their reputation.
- For companies or other legal entities trading for profit, they must demonstrate serious financial loss as a result of the statement.
This requirement prevents trivial claims and ensures only cases with real reputational impact proceed.
What Does “Serious Harm” Mean in Practice?
Courts have clarified that serious harm is more than just embarrassment or irritation. Examples of where the threshold may be met include:
- A false allegation of professional misconduct that causes clients to leave a business.
- A newspaper article accusing someone of dishonesty, widely circulated and believed by readers.
- Social media posts shared extensively, resulting in measurable reputational or financial loss.
Conversely, minor insults, low-level online disputes, or comments that did not spread beyond a small circle are unlikely to pass the threshold.
Defamation Claim Checklist for Claimants
If you are considering a claim, the following steps provide a useful framework:
- Is the statement defamatory? Determine whether the statement damages your reputation in the eyes of ordinary members of society. Mere rudeness or offensive language is insufficient.
- Does it refer to you? The claimant must show that the statement identifies them, either directly by name or indirectly through context. Even if not named, if a reasonable person would assume the statement referred to you, this condition is met.
- Has it been published to a third party? Defamation requires publication beyond the claimant. A statement made privately between two people will not usually qualify.
- Can you show serious harm? Collect evidence such as loss of clients, termination of contracts, decline in revenue, or reputational damage demonstrated by witness statements.
- Is the claim within the time limit? Defamation claims must usually be brought within one year of the publication. Courts rarely extend this period.
- Have you followed pre-action steps? Before issuing a claim, a Letter of Claim should be sent under the Pre-Action Protocol for Media and Communications Claims. This letter should set out the nature of the allegation, why it is defamatory, and the remedies sought.
- Consider alternatives to litigation. Litigation is costly and complex. Mediation or negotiated settlements can often resolve disputes without full court proceedings.
Get to know: Statutory Demands: Pros, Cons and Abuse Risks
Common Defences to Defamation
Defamation law carefully balances two competing interests: protecting reputation and protecting freedom of speech. Defendants have several statutory and common law defences they can rely on.
Truth (Justification)
If the statement is substantially true, there is no defamation. Even if minor details are inaccurate, the defence succeeds if the core allegation is correct.
Honest Opinion
This protects expressions of opinion rather than statements of fact. For example, a critic’s negative review of a restaurant may be strongly worded but still protected, provided it is recognisable as opinion and based on facts available at the time.
Publication on a Matter of Public Interest
If the statement concerns an issue of genuine public interest and the defendant reasonably believed it was in the public interest to publish it, this defence applies. It reflects the importance of investigative journalism and free reporting.
Privilege
Certain contexts attract absolute or qualified privilege. For instance:
- Absolute privilege: statements made in Parliament or in court proceedings cannot be challenged.
- Qualified privilege: applies where there is a duty or interest to make a statement, such as a fair and accurate report of public meetings, provided it is not motivated by malice.
Remedies in Defamation Claims
If a claimant succeeds, the court can order several remedies.
- Damages: to compensate for harm to reputation. In some cases, aggravated or exemplary damages may be awarded where conduct has been particularly malicious.
- Injunctions: preventing further publication of the defamatory statement.
- Corrections or apologies: courts may order the publication of retractions or statements in open court to mitigate reputational damage.
Strategic Considerations
Both claimants and defendants must weigh the risks carefully.
- For claimants: Defamation cases are expensive, and even a successful claim may not result in significant damages unless harm can be quantified.
- For defendants: Ignoring a claim or failing to engage can be costly. Demonstrating evidence for truth, public interest, or opinion is vital.
Social media has complicated defamation law. Posts can spread rapidly, but they may also fade quickly. Claimants must show genuine and lasting harm, not just short-lived embarrassment.
You should know: Public Figures and Defamation: How Lawyers Can Help
Let Us Help You
Defamation disputes demand a precise legal strategy. At Civil Litigation Lawyers, we represent both claimants and defendants in libel and slander claims, providing clear advice on the serious harm test and available defences. Contact us today to discuss your case and protect your reputation or your right to free speech.







