Honest Opinion Defence: Section 3 of the Defamation Act 2013

The honest opinion defence under section 3 of the Defamation Act 2013 protects the right to express genuine opinions. It replaced the former common law defence of "fair comment" and provides a robust defence for commentary, reviews, and criticism — provided certain conditions are met.

The Three Requirements

To succeed with the honest opinion defence, a defendant must show that three conditions are satisfied:

1. The statement was an opinion — not a statement of fact. The distinction is crucial and often fiercely contested
2. The statement indicated the basis of the opinion — in general or specific terms, so that a reader could evaluate the opinion for themselves
3. An honest person could have held the opinion — based on any fact which existed at the time or anything asserted to be a fact in a privileged statement published before the statement complained of

Fact vs Opinion: The Critical Distinction

The difference between a statement of fact and an expression of opinion is fundamental to this defence. Courts consider:

• The language used — words like "I think," "in my view," or "it seems to me" suggest opinion
• The context — a review on a review site is more likely to be understood as opinion than a statement in a news article
• Whether the statement is capable of being proved true or false — facts can be verified; opinions cannot
• How the ordinary reasonable reader would understand the statement

However, using the word "opinion" does not automatically make a statement an opinion. Saying "in my opinion, he is a paedophile" is still a statement of fact dressed up as opinion.

Indicating the Basis of the Opinion

The defendant must show that the statement indicated, whether in general or specific terms, the basis of the opinion. This allows the reader to evaluate the opinion for themselves. For example:

• Sufficient — "Given that the company's accounts show a £2m loss while the directors took £1m in bonuses, I think the management is greedy"
• Insufficient — "The management is greedy" (no basis indicated)
• Contextually sufficient — a restaurant review that describes specific dishes before calling the food "terrible" provides sufficient context

The "Honest Person" Test

The third requirement is objective: could an honest person have held the opinion based on the facts? This is a low threshold — the opinion does not need to be reasonable, balanced, or fair. It must simply be one that an honest person could hold.

However, the defence can be defeated if the claimant shows that the defendant did not actually hold the opinion. This is rare but can arise where there is evidence that the defendant knew the opinion was baseless or was motivated purely by malice.

Common Scenarios

The honest opinion defence is frequently invoked in:

• Product and service reviews — where reviewers express opinions about quality, value, or performance
• Political commentary — opinions on politicians, policies, and public institutions
• Media criticism — newspaper editorials, opinion columns, and broadcast commentary
• Academic debate — critiques of research, methodology, or professional conduct
• Social media posts — personal opinions expressed on platforms like Twitter/X, Facebook, and LinkedIn