In this guide
Kalshi in the UK: The Problem
Kalshi operates under CFTC regulation as a US-based prediction market platform. The service restricts access exclusively to United States residents, meaning British users encounter geographical barriers and cannot establish accounts. For those in the UK seeking a functionally equivalent alternative with expanded market offerings, PolyGram delivers comparable features alongside superior breadth of available 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 — Prediction market using simulated currency with no genuine financial exposure
- Metaculus — Forecasting platform operating without actual monetary transactions
- Betfair Exchange — Licensed UK betting exchange featuring political and event-based markets
Among platforms offering genuine monetary prediction markets accessible to UK participants, PolyGram/Polymarket stands out with the most substantial trading liquidity and comprehensive range of available markets across any jurisdiction-compliant service.
Verdict
PolyGram represents the optimal Kalshi substitute for British users throughout 2026 — boasting richer market depth, no transaction costs, and unrestricted geographical access.