Gambling operator rankings

Best prediction market gambling operators in United Kingdom

22 of the 22 gambling operators we track in this category are available in United Kingdom.

Prediction market gambling operators Betting exchanges

45. Kalshi

Best for Analytical US participants seeking federally regulated, binary event contracts across economics, politics, entertainment, and climate outcomes.

8.70
- Designated Contract Market status under direct US Commodity Futures Trading Commission oversight
- Direct order book structure where contracts price between 1 cent and 99 cents without traditional bookmaker overround
- Broad selection of non-sports event contracts spanning central bank decisions, consumer price indices, and political milestones
Review
Prediction market gambling operators Betting exchanges Advanced gambling operators

325. ForecastEx

Best for

Institutions and experienced individual market participants seeking US-regulated, cash-collateralized binary event contracts cleared through participating futu… More
Institutions and experienced individual market participants seeking US-regulated, cash-collateralized binary event contracts cleared through participating futures commission merchants.

8.30
- Dual CFTC registration as a Designated Contract Market and Derivatives Clearing Organization
- Fully cash-collateralized binary contracts with defined downside bounded between 0.01 and 0.99 USD
- Incentive coupon structure that passes exchange-held collateral yield through to participating member brokers
Review
Betting exchanges Prediction market gambling operators Sportsbook gambling operators

377. Sporttrade

Best for Experienced sports bettors looking to trade contracts dynamically and bypass traditional retail bookmaker hold margins.

8.30
- Transparent exchange order book that allows trading in and out of sports positions before settlement
- Significantly lower effective takeout rates compared to standard retail sportsbook margins
- Regulated state level market presence under legitimate US gaming licenses where operational
Review
Betting exchanges Crypto gambling operators DeFi and on-chain casinos

383. SX Bet

Best for

Web3 native sports bettors and exchange traders seeking self-custodial wagering, competitive peer-to-peer market odds, and transparent on-chain settlement acro… More
Web3 native sports bettors and exchange traders seeking self-custodial wagering, competitive peer-to-peer market odds, and transparent on-chain settlement across major leagues and prediction markets.

8.30
- Non-custodial smart contract architecture keeps user funds under personal Web3 wallet custody until bets are matched and settled.
- Decentralized peer-to-peer order book allows participants to back or lay bets without traditional operator bookmaker margins.
- Transparent on-chain settlement in USDC across Polygon, Arbitrum, and SX Network removes payout clearance delays.
Review
Betting exchanges Prediction market gambling operators Sportsbook gambling operators

495. Novig

Best for Active US sports traders and value-focused bettors seeking commission-free peer-to-peer order books and direct market liquidity over house margins.

8.20
- Order-book architecture enables peer-to-peer matching without standard retail sports betting house margin baked into every line.
- Dual-currency sweepstakes model allows access across more than forty US states where conventional sportsbooks face state licensing hurdles.
- Instant limit and market order execution interfaces provide granular control over entry prices and liquidity participation.
Review
Prediction market gambling operators Betting exchanges DeFi and on-chain casinos

508. Polymarket

Best for Global participants seeking decentralized, order book-driven event contracts on politics, current affairs, and culture with transparent on-chain settlement.

8.20
- Transparent peer-to-peer central limit order book trading denominated in USDC on Polygon
- Broad contract coverage spanning global politics, cultural milestones, economic data, and major sports
- Zero traditional sportsbook overround or platform margin fees on standard trading activity
Review