Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Bot UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| July 24 | 100% |
| August 4 | 100% |
| August 19 | 11% |
| August 25 | 10% |
| August 12 | 8% |
| August 13 | 8% |
| August 14 | 8% |
| August 16 | 8% |
| August 26 | 8% |
| August 31 | 8% |
| August 18 | 7% |
| August 20 | 7% |
| August 23 | 7% |
| August 27 | 7% |
| August 28 | 7% |
| August 29 | 7% |
| August 30 | 7% |
| August 15 | 6% |
| August 17 | 6% |
| August 22 | 6% |
| August 9 | 5% |
| August 10 | 5% |
| August 24 | 5% |
| August 11 | 4% |
| August 21 | 4% |
| August 5 | 1% |
| August 8 | 1% |
| July 25 | 0% |
| July 26 | 0% |
| July 27 | 0% |
| July 28 | 0% |
| July 29 | 0% |
| July 30 | 0% |
| July 31 | 0% |
| August 1 | 0% |
| August 2 | 0% |
| August 3 | 0% |
| August 6 | 0% |
| August 7 | 0% |
Market context
A Houthi strike on a commercial vessel in the Red Sea or near Bab el-Mandeb is the core event here, and the current 100% implied probability reflects a market that is effectively pricing in repeated continuation rather than a one-off escalation. The group has already claimed attacks on Saudi oil tankers this summer, including the *Encelia* and *Layla*, while Reuters reported preparations for further shipping attacks near the strait and continuing disruption to commercial traffic.[11][14][8]
For comparison, the 2023-2025 Red Sea campaign matters because the Houthis used drones, missiles and, in some cases, boarding tactics against commercial shipping, not just military targets, and they have previously forced rerouting even when individual strikes were not confirmed to have hit their intended vessel.[18][9][2] For a programmatic trader, that history argues for monitoring incident-level qualifiers rather than broad “hostile intent”: a intercepted missile, a missed drone, or pressure on traffic flows is not enough unless there is a qualifying kinetic strike or seizure of a commercial ship under the market’s rules.[16][3]
The main catalysts are fresh Houthi communiqués, shipping advisories, and vessel-specific routing changes through the southern Red Sea, especially around Saudi-linked cargoes and ships approaching Bab el-Mandeb.[2][16][8] Reuters noted on 27 July that transit through Bab el-Mandeb fell after renewed Houthi activity, which is the kind of data point that bot-driven workflows can ingest alongside maritime security alerts and AIS interruptions to update conditional orders quickly.[8]
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Bot UK, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
Trade Houthis successfully target shipping on 2026? on Polymarket Bot UK
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