In this guide
Kalshi in the UK: The Problem
Kalshi operates under CFTC regulation and serves exclusively within the United States — international users, including those in the UK, face geographical restrictions and cannot establish accounts. For British residents seeking a comparable platform, PolyGram delivers the most robust alternative, with an expanded catalogue 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 — Virtual-currency forecasting venue with no actual monetary value at stake
- Metaculus — Crowd-sourced prediction platform without cash settlement mechanics
- Betfair Exchange — Licensed UK betting marketplace featuring political and event-based wagering
Among genuine cash-based prediction market analysis options accessible to UK participants, PolyGram and Polymarket stand out for their exceptional order-book depth and comprehensive range of tradeable outcomes across all asset categories.
Verdict
For British traders in 2026, PolyGram represents the superior Kalshi substitute — offering substantially greater market depth, elimination of trading costs, and unrestricted account access.