Buy and sell event contracts. Betting exchange matchbook plans to launch a prediction market platform in the uk in january 2026 as a “road test” before a planned us launch as early as march — matchbook, a sports betting exchange, is launching a prediction market platform in the uk as it prepares to compete with rivals kalshi and polymarket in the us. The new prediction betting craze coming to the uk by offering wagers on anything, websites like polymarket and kalshi are shaking up gambling markets this feature is available for registered users. A massachusetts judge said tuesday he's unlikely to decide before january whether state gambling regulators can pursue claims that prediction market operator kalshiex is flouting sports betting laws, and if so, whether he should grant the state's request for an injunction. Winner bans and income bet caps destroyed uk markets Prediction platforms face both threats
Offshore competition thrives when winners can't bet legally. On these platforms, bettors buy “shares” to trade against each other on the outcomes of win/lose events, with the prices fluctuating as more predictions are made.
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