What a gambling advert may claim
Advertising rules constrain the words, not the arithmetic. Almost every permitted claim is true and almost every true claim needs a condition to survive contact with the terms — and the condition is the part a campaign is built to make forgettable.
The four kinds of claim
Strip the styling away and an advert’s copy is doing one of four jobs. Value claim states what a new customer receives: an amount, a percentage, a number of free spins. Ease claim states how little stands between the reader and money: deposits in seconds, cash out any time, no paperwork. Outcome claim implies what happens next: win big, beat the odds, turn a tenner into a house deposit. Compliance claim is the language the rules require to be present alongside the other three — the warning, the age limit and the responsible-gambling message.
The first two are largely permitted and largely bearable. The third is the one the rules are written against, because it is the one that misleads in a way money cannot fix. The fourth exists because the first three are allowed to exist.
What is prohibited rather than regulated
Some claims are not a matter of prominence at all — they are simply not permitted, at any size, with any qualification. The recurring set across markets: that gambling is a way to escape financial difficulty or to solve a debt problem; that it is a way to earn a living or a supplementary income; that a person’s skill, judgement or system can change the long-run outcome of a game of chance; that a win is due, close, or made more likely by persistence; that a bonus is free money with no conditions attached to it; and any real or implied endorsement by a person who would be understood to be under eighteen or to be vulnerable.
The reason this list is short and stable is that it is not really about words. Each entry is a claim that would change a reader’s behaviour in a way the product cannot support, so the rule is aimed at the behaviour, and the words are only the evidence.
The condition that has to travel with a claim
Where an offer is advertised, the requirement in most regulated markets is not that the conditions are present but that they are prominent in a comparable way to the offer itself. That is a real constraint with a real test: not "was the small print on the page" but "would a reader encountering the advert in the ordinary course have been given the conditions with comparable impact". An offer repeated five times at forty pixels and qualified once at nine is not a borderline case; the second document has been made sub-minute at best.
Rules of this kind exist in several layers — statute, a regulator’s own advertising rules, and often a self-regulatory code an industry body writes that the regulator then holds the industry to. The layers differ in name and in severity by market; the shape does not. Something outside the advertiser decides what a claim may say, and the advertiser’s copy is written to the edge of it.
Turnover required: £100 × 35 = £3,500
Expected loss at a 4% margin over that turnover: £3,500 × 0.04 = £140
Nominal bonus: £100 → the expected cost of converting it, £140, is larger than the amount being converted.
For the bonus to be worth its headline, the player would need to run the £3,500 of turnover at an effective margin below 2.9% (£100 ÷ £3,500). That is not what the advert says, and it is not a number the advert is required to show.
The claim "get £100" and the arithmetic above are both accurate. Only one of them fits on a billboard. This is the mechanism in one example, and it is why the significant-conditions rule exists at all.
A claim that flatters the product rather than the reader
The other family of claim is the one about quality. It is where most of an anonymous banner’s budget goes and where the reader’s defences are weakest, because the claim is not checkable in the same way as an amount. Words like biggest, safest, most trusted, licensed and secure are either statements of fact — in which case they should be checkable somewhere outside the advert — or they are decoration. The six-step check is how to sort one from the other in under a minute, and the disclosure page explains who benefits from the flattering version being remembered.