Sue them for what?
As has been said several times, look up the legal definition of slander!!
I'll bite.
Why is it not slander?
I have no legal knowledge btw. And my opinion of wikipedia
is very low; but for the purposes of this hypothetical argument it'll do
Let's start from the google definition:
"The action or crime of making a false spoken statement damaging to a person's reputation."
The guard
said something which the OP believes to be untrue, and is able to prove with their ticket and associated documents. If he could prove the guard said it - witness, recordings etc - and a reasonable person within earshot may think less of the OP, case closed. No?
Now let's look at the wikipedia article on Defamation, under the section "Slander":
"The common law origins of defamation lie in the torts of "slander" (harmful statement in a transitory form, especially speech), each of which gives a common law right of action."
Again, the guard
said something which the OP believes to be untrue, and is able to prove with their ticket and associated documents. If he could prove the guard said it, and a reasonable person would think less of him by hearing it - job done.
Regarding "reasonable person" - I don't *think* there actually has to be a witness to the slander, as long as it can be proven - eg by recording etc - that it took place, and what was said could be thought of as damaging to the claimant.
NB that the 1975 Faulks committee recommended that the distinction between libel and slander should be abolished - thus slander should be assimilated to libel.
Now looking at the wikipedia article on English Defamation Law:
"English law allows actions for libel to be brought in the High Court for any published statements which are alleged to defame a named or identifiable individual ... in a manner which causes them loss in their trade or profession, or causes a reasonable person to think worse of him, her or them."
I am unsure about what is meant by a "published statement". I haven't read the act, but it may just be the way the article has been written. Let's assume by "published statement" they mean "anything said or written that's publicly available".
The part about a named individual may not be good for the OP - but there is some relief in that :
"A statement can include an implication; for instance, a photograph of a particular politician accompanying a headline reading "Corrupt Politicians" could be held as an allegation that that politician was personally corrupt. Once it is shown that a statement was published, and that it has a defamatory meaning, that statement is presumed to be false unless the defendant is able to raise a defence to his defamatory act."
So, if the guard implied the OP was breaking the law / acting as a fare dodger, and it was said to him, and that the statement would be thought of as defamatory, then from my POV it's job done.
In terms of a possible defence for what the guard may or may not have said:
"Allowable defences are justification (i.e. the truth of the statement), fair comment (i.e., whether the statement was a view that a reasonable person could have held), and privilege (i.e., whether the statements were made in Parliament or in court, or whether they were fair reports of allegations in the public interest)."
Fair comment is interesting, but appears that could be overcome if the guard did not, for example, check the validity with the tools at their disposal before making the statement.
Moving on, there is now the matter of the Defamation Act 2013. This seems to make it harder to prove defamation, by making a higher burden of proof for the claimant. Notably, it seems to give two strong defenses which are plausible in this case:
Requirement of serious harm: "A statement is not defamatory unless its publication has caused or is likely to cause serious harm to the reputation of the claimant".
Up to OP to prove that calling someone a fair dodger / whatever is going to hurt their reputation...
.
Honest opinion: It is a defence for defamation, to show the statement complained of was a statement of opinion. That it indicated in general or specific terms, the basis of the opinion. That an honest person could have held the opinion on any fact which existed when the statement was published
Again, up to OP to show that the guard was wrong.As for "Fair comment" above. If the guard didn't first use their knowledge and tools to check what the OP was saying was untrue, my money is still with the OP.
So, in my opinion, based on five minutes searching, I tend to side with the OP, that there could be a case for defamation. Although I am no lawyer!
Please feel free to tell me why I'm wrong...