Free postal entry to UK competitions, explained

UK prize competitions are governed by the Gambling Act 2005. A paid competition is only lawful, rather than an unlicensed lottery, if it does one of two things: it requires genuine skill, knowledge or judgement to enter (a question that meaningfully limits who can take part), or it offers a genuine free entry route into the same draw on equal terms. Many operators offer both, which is why you so often see a question and a postal address.

The free route is the legal pressure valve. Without it, a pure pay-to-enter draw of chance would generally need a gambling licence. Offering a real, no-cost way in is what keeps a paid competition on the right side of the line. For the wider legal picture, see our guide on whether UK prize competitions are legal.

This is general information, not legal advice.

The mechanics vary, but the standard pattern is a postcard or plain sheet of paper sent to the operator's free-entry address, arriving before the closing date. The terms and conditions tell you exactly what to include, but you can usually expect to provide:

• Your full name.
• Your postal address and a contact email or phone number, so they can reach you if you win.
• The name or reference of the specific competition you are entering. This matters when an operator runs several at once.
• The answer to the entry question, if the competition has one.

Some operators cap the number of free postal entries per person per draw, or per envelope, exactly as they cap paid entries. Read the terms before you post, and keep proof of postage if the prize is significant.

This is the part that matters most. A free entry route only does its job if it is a real alternative: the same prize, the same draw, drawn at the same time, with no disadvantage compared with paying. A token gesture does not count. An address that is hard to find, a route that only enters a separate "consolation" draw, or terms that quietly give postal entrants worse odds would all undermine the whole point.

In a properly run competition, the entry slip you posted for free sits in exactly the same pool as the entry someone else paid for. One ticket is one ticket, however it arrived. If an operator's terms suggest otherwise, such as a different draw, a smaller prize, or a later date for postal entrants, treat that as a red flag worth checking before you trust the site.

Free does not mean costless. A second-class stamp is roughly £1, and once you add a postcard or paper, an envelope and your time, a single postal entry realistically costs you in the region of £1 to £1.50. So the honest question is not "is it free?" but "is that ~£1 a good use of money compared with the prize on offer?"

The maths is the same expected-value calculation we use everywhere on CompWatch: the value of an entry is roughly the prize value divided by the total number of entries in the draw, minus what the entry costs you. The total entries figure that matters is the if-sold-out cap (the maximum number of tickets), not how many have sold so far. Our guide to how competition odds work explains why current odds are only provisional.

A worked example with round, made-up numbers. Suppose a draw has a cap of 20,000 entries and a prize worth £10,000 (use the honest cash-alternative value, not a flattering "retail" figure). Each entry is worth about £10,000 ÷ 20,000 = £0.50. If you posted a free entry that cost you a ~£1 stamp, your expected value is roughly 50p − £1 = about minus 50p. The stamp cost more than the share of prize it bought you.

Now flip the numbers. A draw with a £40,000 cash prize and a 20,000 cap is worth about £2 an entry. Against a ~£1 stamp, that is a positive expected value of roughly £1, and notably better than paying, say, £3 a ticket for the same odds. The pattern is clear: postal entry is only mathematically worthwhile on high-value prizes relative to the entry cap. On cheap, small-prize draws, the stamp quietly eats the value. As ever, this is information, not investment advice, and most individual entries still lose on average.

A popular belief is that, because so few people bother with the postal route, posting a free entry dramatically improves your chances. It does not, and it is worth understanding why.

Your free entry goes into the same draw as every paid entry. Your odds are set by the total number of entries in that pool, not by how many of them arrived by post. If a draw fills to its cap of 20,000 entries, your single ticket is one in 20,000 whether it came by card payment or by stamp. The fact that postal entries are a tiny share of the total does not shorten your odds at all. Those paid entries are still in the pool with you.

What posting actually does is change your cost, not your odds. You get the same one-in-the-pool chance as a paying entrant, for the price of a stamp instead of the ticket price. That is the real edge, and it only becomes a meaningful saving on draws where the ticket price is high relative to the stamp: the expensive-ticket, high-value competitions. On a draw with cheap tickets, the postal route barely undercuts the paid price, and the stamp may cost more than a ticket would have.

There is no single national template for postal entry, so the details differ from site to site. Before you post, check the terms and conditions for:

• The exact free-entry address, and any required format (postcard only, no envelopes, specific wording).
• Whether there is a limit on free entries per person, per draw or per envelope.
• The closing date, and whether it is the postmark or the arrival date that counts.
• What information must be included for the entry to be valid.
• The entry question, if the competition uses one as well as a free route.

Getting any of these wrong can void an otherwise valid entry. Clear, findable, generous free-entry terms are also a sign of a well-run operator; vague or buried ones are worth noting. Our guide to hostile terms and conditions covers the clauses that should give you pause.

A clearly published free entry route is one of the weighted indicators CompWatch uses when grading the 418 sites we track. Operators that document a genuine, equal-terms free route earn credit for it; those that mention none do not. You can see whether a site publishes a free route, alongside its other indicators and overall letter grade, on its page.

To jump straight to live competitions with a documented free entry route, use our free-entry discovery view. To compare operators on their full trust profile, browse the site trust scores. And whatever route you choose, paid or postal, keep it in proportion. See play responsibly.