In this guide
Kalshi in the UK: The Problem
Kalshi operates under CFTC regulation and serves exclusively within the United States — residents of the UK face geographical restrictions and cannot establish accounts on the platform. For those in the UK seeking a comparable prediction market service, PolyGram stands out as the most suitable option, offering a broader range of markets.
PolyGram vs Kalshi: Direct Comparison
| Feature | Kalshi | PolyGram (via Polymarket) |
|---|---|---|
| UK availability | ❌ US only | ✅ Full UK access |
| Regulation | CFTC-licensed | On-chain / UMA oracle |
| Settlement | USD | USDC (Polygon) |
| Trading fee | Up to 2.5% | 0% on PolyGram |
| Market volume | Moderate | $10B+ lifetime (Polymarket) |
| Market types | Politics, economics | Politics, sports, crypto, world events |
| API access | Yes (US) | Yes (CLOB API) |
| Mobile app | iOS/Android | PWA (iOS/Android) |
Other Kalshi Alternatives
- Manifold Markets — A prediction platform using play money rather than real capital
- Metaculus — Community-driven forecasting site without monetary transactions
- Betfair Exchange — Licensed UK betting exchange featuring political wagering markets
Among platforms accepting UK participants with genuine financial risk, PolyGram/Polymarket delivers the most substantial order book depth and comprehensive event coverage of any accessible option.
Verdict
For UK-based traders in 2026, PolyGram represents the superior Kalshi substitute — offering richer liquidity pools, no transaction costs, and unrestricted geographical access.