Prediction Markets vs Betting Exchanges
They're cousins, not twins. A betting exchange lets customers bet against each other and takes commission; a prediction market presents outcomes as tradeable contracts you can buy and sell before settlement. For UK gamblers, the biggest difference is regulation — exchanges like Betfair are UK-licensed, while many prediction markets are not.
🔑 Key takeaways
- Exchange: back or lay against other customers; the platform takes commission.
- Prediction market: trade contracts priced as probabilities, often selling before settlement.
- Betfair and Smarkets are UK-licensed exchanges; many prediction markets aren't.
- Prediction markets often cover wider topics — inflation, courts, weather, tech.
- For UK legal protection, a licensed exchange usually wins.
Prediction markets and betting exchanges are cousins, not twins.
How each works
A betting exchange lets customers bet against each other — on Betfair you can back an outcome or lay it (bet against it) — and the exchange takes commission rather than acting like a traditional bookmaker. A prediction market also lets users take opposing views, but it presents outcomes as tradeable contracts: a contract at 64p is read as roughly a 64% probability, and users may buy and sell before the result is known. Both rely on reading a price as a probability, the same idea as a prediction market’s pricing.
Three practical differences
First, regulation: Betfair and Smarkets are established UK-facing exchanges under Commission rules, while many newer prediction markets aren’t UK licensees and may restrict British users. Second, topic range: exchanges are strongest in sport, racing and some politics, while prediction markets often go wider — inflation, court cases, elections, weather, tech. Third, behaviour: on an exchange most people still think like punters; on a prediction market many think like traders, buying at 30p and selling at 50p before the result rather than waiting for settlement — closer to cash out than a standard bet.
The bottom line
A British player wanting legal protection is usually better served by a UK-licensed exchange. A prediction market may offer more unusual topics, but that wider menu can come with regulatory uncertainty, weaker consumer protection and more complicated terms — the same caution behind whether UK players can use prediction markets. The hunt for the best price across venues is also what powers arbitrage.
Sources
Frequently asked questions
How is laying different from selling a contract? +
On an exchange you lay (bet against) an outcome at set odds. On a prediction market you sell a contract whose price floats as a probability, and you can often trade out early.
Which has more topics? +
Prediction markets typically go wider — elections, inflation, court cases, weather, tech launches — while exchanges are strongest in sport, racing and some politics.
Which is safer for UK players? +
Usually a UK-licensed exchange. The wider menu on a prediction market can come with regulatory uncertainty and weaker consumer protection.
Editor at BritishGambler.co.uk and partnership manager, working with the best licensed UK casino providers.
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