BE
OpenBetfair Exchange
Betting exchange
The UK's best-known betting exchange for peer-to-peer prices across football, politics and major sport.
UK Gambling Commission
Read Betfair Exchange reviewBrand directory
Prediction Market Sites
Full editorial profiles for real platforms only. We check UK access, product type and regulatory position without creating placeholder brands.
SM
OpenSmarkets
Betting exchange
A UK-based exchange known for a simple trading interface, politics coverage and competitive commission.
UK Gambling Commission
Read Smarkets reviewMA
OpenMatchbook
Betting exchange
A UK-facing betting exchange focused on sport, with exchange prices and commission on net winnings.
UK Gambling Commission
Read Matchbook reviewPO
Limited UK accessPolymarket
Crypto prediction market
A large crypto-settled prediction market covering politics, sport, economics and breaking news.
Not UK-licensed
Read Polymarket reviewKA
Limited UK accessKalshi
Event contracts exchange
A US-regulated event-contract exchange covering economics, politics, weather and culture.
US CFTC-regulated
Read Kalshi reviewPR
Limited UK accessPredictIt
Event contracts exchange
A long-running US political prediction market used for election and government questions.
US research framework
Read PredictIt reviewME
OpenMetaculus
Forecasting community
A forecasting community where accuracy, rather than money, is at stake.
Not a gambling product
Read Metaculus reviewMA
OpenManifold Markets
Forecasting community
A play-money prediction market where users create and trade questions across almost any topic.
Not a gambling product
Read Manifold Markets review