> How to work out your real odds in a UK prize competition, why a published ticket cap matters, and which odds claims are worth double-checking. Source page: https://granddraws.co.uk/guides/competition-odds-explained [All guides](https://granddraws.co.uk/guides) # Competition odds, explained honestly Last updated 25 September 2026 · 4 min read Short answer In a capped prize competition, your odds are the number of tickets you hold divided by the total number that can be sold. Hold 10 out of 5,000 and your chance is 10 in 5,000, which is 1 in 500. Because the total is published upfront, you can work out your exact worst-case odds before you enter. An uncapped prize draw never lets you do that. ## The calculation Odds = your tickets ÷ total tickets. That's the whole formula. If a competition is capped at 7,500 tickets and you hold 25, your chance is 25 in 7,500, or roughly 1 in 300. And that's your worst case. The published total is the maximum that can ever be in a draw. At Grand Draws every competition is drawn on its closing date whether or not it sells out, so when fewer tickets have been sold there are fewer in the draw, and your real odds come out better than the published figure. Never worse. ## Why a cap matters An uncapped competition can keep selling tickets with no end in sight, so you can't know your odds at the moment you enter. They get worse with every ticket sold after yours. A cap turns the odds into a fact you can check rather than a moving target. It's why we publish the total on every competition page, not just the price, and it's what the Government's voluntary code for prize draw operators encourages: telling players how likely they are to win, for example by showing the maximum number of tickets available. ## Odds claims worth double-checking Odds are where overclaiming tends to show up. It's worth a second look when you see: - "Best odds anywhere" with no total ticket count to check it against. - Countdowns or sold percentages that reset, creating urgency out of nothing. - "Only a few left" on a competition with no published cap. Few of what? There is nothing to measure it against. - A headline prize value rounded generously upward. A £2,500 prize advertised as "£3K" overstates it by £500. ## What we publish Every competition shows its ticket price, its total ticket cap, the per-person limit and the resulting odds for however many tickets you've picked. Our reward wheels publish their real odds too, on the rewards page. None of that is generosity. Published odds are the only kind anyone can actually check. ## Sources - [DCMS: Voluntary Code of Good Practice for Prize Draw Operators (gov.uk)](https://www.gov.uk/government/publications/voluntary-code-of-good-practice-for-prize-draw-operators/voluntary-code-of-good-practice-for-prize-draw-operators) - [CAP Code, section 8: promotional marketing (ASA)](https://www.asa.org.uk/type/non_broadcast/code_section/08.html) - [Gambling Commission: Free draws and prize competitions](https://www.gamblingcommission.gov.uk/public-and-players/guide/page/free-draws-and-prize-competitions) Checked against these sources on 25 September 2026. ## Common questions **Do my odds improve if the competition does not sell out?** Yes. The published total is the maximum that can be in a draw, so if fewer are in it than that cap, your real chance is better than the published worst case. Our draws go ahead on the closing date either way. **Does buying more tickets improve my odds proportionally?** Yes. Ten tickets give ten times the chance of one, up to the per-person cap. The cap is there so no single entrant can dominate a draw. **Are free postal entries counted in the odds?** Yes. Every entry in the draw counts the same, whether it was paid for or posted. ## Related guides [Free postal entry, explainedHow to enter a UK prize competition free by post, why the odds are identical to a paid entry, and what the law asks of a free entry route.](https://granddraws.co.uk/guides/free-postal-entry-explained) [How we prove our draws are fairHow our commit-reveal draw works: a published SHA-256 commitment, a future drand beacon round, and a revealed seed that lets you recompute any winner.](https://granddraws.co.uk/guides/how-we-prove-our-draws-are-fair) [Prize competitions vs the lottery: which is the better bet?How a UK prize competition differs from the National Lottery on odds, cost, prizes and the law, and where each one actually gives you the better shot.](https://granddraws.co.uk/guides/prize-competitions-vs-lottery) [How to compare UK prize competitionsA practical checklist for comparing UK prize competitions: the real prize, price, odds, free entry, the draw, who runs it, results and your limits.](https://granddraws.co.uk/guides/how-to-compare-prize-competitions) [How instant win games workHow instant win games allocate prizes, whether they are random, and how to read the odds. Where Grand Draws stands on them.](https://granddraws.co.uk/guides/how-instant-win-games-work) [What do competition tickets cost, and is a cheap ticket better value?UK competition tickets start at 9p. What the price actually buys, why a cheap ticket gives better odds but less prize, and the minimum order explained.](https://granddraws.co.uk/guides/what-competition-tickets-cost) [How to win prize competitions in the UKNo trick guarantees a win, but there are sensible ways to improve your real odds without wasting money. Here is what actually helps, and what to ignore.](https://granddraws.co.uk/guides/how-to-win-competitions-uk) ## Be first when we open Paid competitions open 30 October 2026, and our free £500 launch draw runs 1 to 30 October. Create a free account for first pick of tickets, free welcome rewards and launch-day alerts. 18+. [Create a free account](https://granddraws.co.uk/account?next=early-access) ## Your ticket could be next Every competition has published odds, a draw anyone can verify and a free postal route. 18+. [Browse competitions](https://granddraws.co.uk/competitions) --- Grand Draws is a UK skill-based prize competition operator. It is not a casino, not a lottery and not gambling. Every competition requires a correct answer to a genuine skill question and offers a free postal entry route on the same odds. 18+, UK residents only. Please enter within your means.