Libel vs Slander: What's the Difference Under UK Law?

"Libel" and "slander" are two forms of defamation, but they are not interchangeable. Understanding the distinction matters because the legal requirements — particularly for slander — differ in important ways. This guide explains the difference under UK law and why it is relevant to your case.

The Basic Distinction

The difference is simple in principle:

• Libel is defamation in a permanent form — typically written words, but also including images, broadcasts, and online publications
• Slander is defamation in a transient form — typically spoken words or gestures

In the digital age, the vast majority of defamation claims involve libel. Social media posts, emails, forum comments, blog articles, online reviews, and messages in group chats are all forms of libel because they exist in a permanent, readable form.

Why the Distinction Matters

Historically, the distinction between libel and slander had significant legal consequences:

Libel Is Actionable Per Se

Libel has always been actionable without proof of special damage — meaning the claimant does not need to prove specific financial loss. The harm to reputation is presumed from the permanent nature of the publication.

Slander Requires Special Damage (Usually)

Slander generally requires the claimant to prove "special damage" — actual financial loss caused by the defamatory words. This is a significant additional hurdle. However, there are four exceptions where slander is actionable per se:

1. Imputation of a criminal offence punishable by imprisonment
2. Imputation of a contagious or infectious disease (largely historical)
3. Imputation of unchastity in a woman (under the Slander of Women Act 1891, now largely obsolete)
4. Imputation calculated to disparage the claimant in their office, profession, trade, or business

In practice, the fourth exception — disparagement in profession or business — is the most commonly invoked. If someone verbally accuses you of being incompetent at your job, dishonest in business, or unfit for your professional role, the slander is actionable without proof of special damage.

The Serious Harm Test

Since the Defamation Act 2013, all defamation claims — whether libel or slander — must meet the serious harm threshold. The claimant must show that the statement caused or is likely to cause serious harm to their reputation.

Some legal commentators argue that the serious harm test has effectively narrowed the practical difference between libel and slander, since even libel claimants must now demonstrate real reputational impact rather than relying on the presumption of harm.

Modern Complications

The digital world has blurred the line between libel and slander:

• Voice notes and audio messages: A voice message on WhatsApp is spoken (suggesting slander) but recorded in permanent form (suggesting libel). Most practitioners would treat this as libel
• Live streams: A defamatory statement made during a live stream may be slander at the moment of broadcast but becomes libel when the recording is saved or shared
• Videos: Defamatory statements in YouTube videos, TikToks, or Instagram Reels are libel — they exist in permanent form
• Broadcasts: Under the Broadcasting Act 1990, defamatory statements in broadcast programmes are treated as libel, regardless of whether they are scripted

Slander in the Workplace

Workplace slander remains one of the most common contexts for spoken defamation. False verbal allegations made in meetings, conversations with colleagues, or informal discussions can be actionable, particularly when they disparage someone in their professional capacity.

However, workplace slander claims face practical challenges — proving exactly what was said, to whom, and what harm resulted. Contemporaneous notes, witness statements, and documentary evidence of the consequences are essential.

Practical Advice

If you believe you have been defamed, whether in writing or speech:

• Preserve evidence immediately: Screenshot written content; note the date, time, witnesses, and exact words of spoken statements
• Identify the form: Is the defamation in permanent or transient form? This affects the legal analysis
• Assess the harm: Can you demonstrate serious harm to your reputation?
• Act within the time limit: The limitation period is one year from publication
• Seek specialist advice: The distinction between libel and slander, and the applicable defences, require expert legal analysis

Our defamation team handles both libel and slander claims. Contact us for a free case evaluation.