Kalshi's taker fee is 0.07 × contracts × price × (1 − price), times the series multiplier (1 by default) and rounded up to the next cent, so it peaks at 1.75¢ per contract at a 50¢ price. Resting (maker) orders are free on standard series and pay a fee only on the series Kalshi lists with maker fees.
Country-by-country rules, regulator actions and sources for Polymarket and Kalshi.
This is not legal advice, and we don't say whether trading is legal for you in the United Kingdom. We report what each platform's published rules say about the United Kingdom and the public regulator, court and police actions we could source, each with a date. Those rules change fast, so check the platform's current terms and the law in the United Kingdom before doing anything. ‘Not listed’ only means a platform's own list doesn't name the United Kingdom; it doesn't mean trading there is permitted.
Status under each platform's own published rules, and the most recent public action we could source, as of 2026-09-24.
No public action found as of 2026-09-24
Dated public actions on record: 0
This page keeps two things apart for the United Kingdom: what each platform's own published rules say, and what regulators, courts and police in the United Kingdom have publicly done. A platform's list is its own policy and a government order is the government's, so a country can be on one and not the other.
The status labels are the same as in the main table. Restricted means the platform's own list blocks trading from the United Kingdom. Close-only means existing users there can close positions but can't open new ones. Some regions means only named regions are restricted. Separate product means residents use a different, separately regulated product, as US residents do with the Polymarket US app. Not listed means the platform's published list doesn't name the United Kingdom; that is not the same as permitted, and a regulator may still block the site.
Polymarket publishes two official lists that don't fully match: its Help Center page (updated August 14, 2026) and its developer docs (undated). We follow the dated Help Center list and say where the developer docs differ. Kalshi statuses follow its Member Agreement as fetched on September 24, 2026; the agreement itself is undated.
Each action shows the authority as it names itself, what it did, the platform it concerns and the date: the date of the action where it was published, otherwise the date it was first reported. Every entry is marked Official, Platform document or Secondary report. Where only secondary reporting exists, we say ‘reported by’ and name the outlet; where official sources conflict, we report both.
‘No public action found’ means our searches found none, not that none exists. Nothing on this page says whether trading is legal for you: for that, check the platforms' current terms and the law in the United Kingdom.
Polymarket's Help Center page on geographic restrictions (updated August 14, 2026) lists the United Kingdom among the 39 countries where it says trading is blocked, with no UK-specific note. Its developer docs (undated, checked September 24, 2026) put the United Kingdom in the group that is close-only on both the website and the API, meaning existing users can close positions but not open new ones. The two lists don't match; we follow the dated Help Center list and record the difference. We found no Polymarket notice or press release that names the UK, and no published date for when the UK was first restricted.
In practice the restriction is Polymarket's own geoblock. We found no ISP or DNS block, no app-store removal and no court order in the UK, and we found no UK order for a block of the kind the French or Italian regulators have issued. Polymarket continues to list UK political markets, such as the next Prime Minister, which press reports describe as viewable but not tradable from the UK. Polymarket's Help Center says that using a VPN to get around its restrictions violates its Terms of Use.
Kalshi's Member Agreement (section VI, undated, fetched September 24, 2026) lists the United Kingdom as a Restricted Jurisdiction. The UK was on Kalshi's first published list, in the Exchange Notice of October 23, 2025, on the notice of November 4, 2025, and on the current agreement; Kalshi's help article on trading from outside the US (updated March 20, 2026) defers to that agreement. We found no Kalshi notice or blog post naming the UK, no UK licence application by Kalshi and no UK action naming Kalshi.
Two regulators divide the field. The Gambling Commission regulates gambling in Great Britain (England, Scotland and Wales; Northern Ireland has separate law) under the Gambling Act 2005. In a blog post of February 4, 2026 by Brad Enright, its Director of Strategy, it said prediction-market products' core aspects are akin to a betting exchange and ‘would appear to fall within the definition of a “betting intermediary”’, so an operator needs a Commission operating licence; that providing facilities for gambling without one is a criminal offence; and that unlicensed operators ‘should take steps to ensure they are not targeting or transacting with consumers in Great Britain’. The post names neither Polymarket nor Kalshi and cites no section numbers. The Financial Conduct Authority (FCA) regulates contracts on financial outcomes. Its policy statement PS19/11 of March 29, 2019 made permanent a ban on firms marketing, distributing or selling binary options to retail clients in or from the UK, in force since April 2, 2019.
The FCA's perimeter report (published March 26, 2026, updated July 16, 2026) has a section on prediction markets. It says platforms linked to non-financial events such as sporting or political outcomes fall under the Gambling Commission's remit, that platforms referencing financial or certain climatic events fall within the FCA's perimeter, and: ‘Our current view is that the financial PMPs we have seen are binary options. As such they remain subject to the FCA's permanent ban on the sale of binary options to retail consumers, which we consider appropriate given the speculative, gambling-like nature of these contracts and the high risk of consumer harm.’ The FCA added that it ‘will consider whether we want to do further work on access to these products, and/or clarify the perimeter’. The report names no platform.
The government's position is in written parliamentary answer HL14169, given on February 16, 2026 by Baroness Twycross, the gambling minister, to a question from Baroness Bennett of Manor Castle: ‘In order to operate in Great Britain, any prediction market would require a licence from the Gambling Commission… If approved, they would be classified as a “Betting Intermediary” and subject to regulation under the Gambling Act 2005. We will monitor the potential impacts of prediction markets and consider further action if needed.’ The UK was not among the nine European gambling regulators that signed the joint statement on prediction markets of June 18–19, 2026, and EU-level statements don't cover it.
Actions: none found. As of September 26, 2026 our searches found no Gambling Commission enforcement notice, cease-and-desist, unlicensed-operator listing, payment-blocking request or prosecution naming Polymarket or Kalshi, no FCA warning-list entry for either, no ISP block and no court case. That means we found none, not that none exists. Two press reports describe movement without action. On September 7, 2026 The Times, as relayed by CoinDesk, reported that the FCA had held talks with platforms about easing the 2019 retail ban for financial event contracts, naming Polymarket and Kalshi; the FCA's published position was unchanged, and any change to the ban would need a public consultation, none of which had been published as of September 26, 2026. On September 22, 2026 SBC News reported a Polymarket lobbying effort in London and Brussels seeking classification as a financial service, and quoted the Gambling Commission: ‘If a prediction market operator was to launch here in Great Britain, we do not believe they would be able to classify themselves as non-gambling products.’ We found no UK licence application by either platform.
The entries below are rendered from the same dated data as the main country table, newest first. Each row shows the date, the authority as it names itself, the type of action, the platform it concerns and the source with its type.
No public action found. As of 2026-09-24, our searches found no regulator, court or police action naming Polymarket or Kalshi in the United Kingdom. That means we found none, not that none exists.
This section reports what the law and the authorities in the United Kingdom have said about people who take part in these markets, and any enforcement against users that has been made public. It describes; it doesn't advise.
Every UK statement addresses operators. The Gambling Commission's licensing requirement, and the offence of providing facilities for gambling without a licence, apply to those who offer gambling; the FCA's binary-options ban binds firms that sell to retail clients and is not a prohibition on individuals. Neither the Commission's blog, the FCA's report nor the ministerial answer says anything about penalties for consumers.
We found no prosecution of a UK user of either platform, no HMRC guidance on prediction-market gains and no UK bank restriction naming the platforms. Whether trading is lawful for you is not something this page decides.
The UK is the home of licensed betting exchanges: Betfair, licensed and regulated by the Gambling Commission, launched on June 9, 2000, and Smarkets and Matchbook operate under the same regime. The Commission's ‘betting intermediary’ framing points prediction-market operators to that licence type; Polymarket's reported lobbying seeks the opposite classification, as a financial service. Separately, Gibraltar, a British Overseas Territory with its own regulator, licensed ADI Predictstreet as its first prediction-market betting intermediary under a new framework in July 2026, as reported by SBC News; that is not a UK licence and doesn't change the position in Great Britain.
PolyKal is a read-only research site, and it does not restrict access by country, including from the United Kingdom. Its public pages, including prices on both platforms, order-book depth, after-fee cost comparisons, the fee calculator, and large-trade and whale data, need no account. You don't need a VPN to use them.
Viewing public market data is not trading. PolyKal doesn't place orders, hold funds or give access to trading on either platform, and a restriction on Polymarket or Kalshi in the United Kingdom still applies to trading there. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions; getting around a block can also break local law. PolyKal doesn't help anyone get around them.
Start with the compare page, the fee calculator or large trades, or read how Polymarket works and how Kalshi works.
the United Kingdom is one of 27 countries, plus the United States, that PolyKal tracks. The full availability table shows every country's status under each platform's rules and its regulator actions side by side, with the same dates and sources as this page, and its change log lists every edit we make.
Every entry is re-checked at least once a quarter, and sooner when a platform or regulator announces a change. The next scheduled full re-check is shown in the sidebar.
We don't give a verdict for you. What the record shows: Polymarket's own Help Center (updated August 14, 2026) lists the UK as blocked, so under its rules people in the UK can't trade. The Gambling Commission said on February 4, 2026 that a prediction-market operator needs a betting-intermediary licence to operate in Great Britain, and the FCA said in March 2026 that the financial prediction-market products it has seen are binary options covered by its 2019 ban on sales to retail consumers. Both statements are about operators and firms; we found no UK action naming Polymarket, and neither statement says anything about penalties for users. Check the current law and the platform's terms for your own situation.
Kalshi's Member Agreement lists the United Kingdom as a Restricted Jurisdiction, and has since its first published list of October 23, 2025, so under Kalshi's own rules people in the UK are excluded. We found no UK regulator, court or police action naming Kalshi; the Gambling Commission's and FCA's statements described on this page apply to prediction-market operators generally.
Not by the UK authorities: as of September 26, 2026 we found no UK order, block or court case naming Polymarket. The restriction people in the UK meet is Polymarket's own geoblock, which its Help Center (updated August 14, 2026) lists as blocked and its developer docs as close-only. The Gambling Commission's position is that an operator needs a licence to operate in Great Britain; we found no UK licence application by Polymarket.
Not as such. The FCA's ban, made permanent by PS19/11 and in force since April 2, 2019, stops firms from marketing, distributing or selling binary options to retail clients in or from the UK. In its perimeter report of March 26, 2026 the FCA said the financial prediction-market products it has seen are binary options and so fall under that ban, while products on sporting or political outcomes fall to the Gambling Commission. The Times reported on September 7, 2026, as relayed by CoinDesk, that the FCA had held talks about easing the ban; its published position had not changed as of September 26, 2026.
Yes, on PolyKal. PolyKal is a read-only research site that shows prices, order-book depth and fee comparisons for both platforms without an account, and it does not restrict access from the UK. Viewing data is not trading: PolyKal places no orders and gives no access to either platform, and both platforms' own restrictions on the UK still apply to trading there.
No. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions. Getting around a block can also break local law. You don't need a VPN to research these markets: PolyKal's prices, order books and fee calculator don't require one.
We re-check every country page at least once a quarter, and sooner when a platform or regulator announces a change; each rule and action on the page shows its own date and source. If you spot something out of date for the United Kingdom, email [email protected] with a link to the new rule or order.
Every statement on this page rests on the sources below. Platform rules were checked against Polymarket's and Kalshi's own pages on September 24, 2026; regulator, court and police actions were checked against the sources listed on September 24–26, 2026. Each source is marked as official, a platform document or a secondary report. Where only secondary reporting was available, we cite it and say so; where official sources conflict, we report both. We re-verify this page quarterly.
Official: Gambling Commission, ‘Prediction markets: here's what you need to know’ (blog by Brad Enright) (February 4, 2026); FCA, PS19/11 ‘Product intervention measures for retail binary options’ (March 29, 2019); FCA, Perimeter Report, section ‘Prediction markets’ (March 26, 2026, updated July 16, 2026); UK Parliament, written answer HL14169 by Baroness Twycross (February 16, 2026).
Platform documents specific to the UK: Kalshi Exchange Notice, Updated Member Agreement (October 23, 2025; first Restricted Jurisdictions list, including the United Kingdom).
Secondary reports: CoinDesk, ‘UK regulator weighs easing financial prediction-market ban’ (relaying The Times) (September 7, 2026); SBC News on Polymarket's European lobbying and the Gambling Commission's response (September 22, 2026).
Platform documents (all countries): Polymarket Help Center: Geographic restrictions (updated August 14, 2026), Polymarket developer docs: Geoblock (undated), Kalshi Member Agreement (undated; fetched September 24, 2026) and Kalshi Help Center: trading from outside the US (updated March 20, 2026).
PolyKal is an independent research tool. We are not affiliated with, endorsed by, or operated by Polymarket or Kalshi. We report each platform's published rules and public regulator, court and police actions in the United Kingdom; we don't say whether trading is legal for you, and we don't help anyone get around a platform's restrictions. Last reviewed September 26, 2026. Not legal or financial advice.
Know of a newer rule, order or court decision for the United Kingdom? Email [email protected] with a link to it.
Kalshi's taker fee is 0.07 × contracts × price × (1 − price), times the series multiplier (1 by default) and rounded up to the next cent, so it peaks at 1.75¢ per contract at a 50¢ price. Resting (maker) orders are free on standard series and pay a fee only on the series Kalshi lists with maker fees.
Country-by-country rules, regulator actions and sources for Polymarket and Kalshi.
This is not legal advice, and we don't say whether trading is legal for you in the United Kingdom. We report what each platform's published rules say about the United Kingdom and the public regulator, court and police actions we could source, each with a date. Those rules change fast, so check the platform's current terms and the law in the United Kingdom before doing anything. ‘Not listed’ only means a platform's own list doesn't name the United Kingdom; it doesn't mean trading there is permitted.
Status under each platform's own published rules, and the most recent public action we could source, as of 2026-09-24.
No public action found as of 2026-09-24
Dated public actions on record: 0
This page keeps two things apart for the United Kingdom: what each platform's own published rules say, and what regulators, courts and police in the United Kingdom have publicly done. A platform's list is its own policy and a government order is the government's, so a country can be on one and not the other.
The status labels are the same as in the main table. Restricted means the platform's own list blocks trading from the United Kingdom. Close-only means existing users there can close positions but can't open new ones. Some regions means only named regions are restricted. Separate product means residents use a different, separately regulated product, as US residents do with the Polymarket US app. Not listed means the platform's published list doesn't name the United Kingdom; that is not the same as permitted, and a regulator may still block the site.
Polymarket publishes two official lists that don't fully match: its Help Center page (updated August 14, 2026) and its developer docs (undated). We follow the dated Help Center list and say where the developer docs differ. Kalshi statuses follow its Member Agreement as fetched on September 24, 2026; the agreement itself is undated.
Each action shows the authority as it names itself, what it did, the platform it concerns and the date: the date of the action where it was published, otherwise the date it was first reported. Every entry is marked Official, Platform document or Secondary report. Where only secondary reporting exists, we say ‘reported by’ and name the outlet; where official sources conflict, we report both.
‘No public action found’ means our searches found none, not that none exists. Nothing on this page says whether trading is legal for you: for that, check the platforms' current terms and the law in the United Kingdom.
Polymarket's Help Center page on geographic restrictions (updated August 14, 2026) lists the United Kingdom among the 39 countries where it says trading is blocked, with no UK-specific note. Its developer docs (undated, checked September 24, 2026) put the United Kingdom in the group that is close-only on both the website and the API, meaning existing users can close positions but not open new ones. The two lists don't match; we follow the dated Help Center list and record the difference. We found no Polymarket notice or press release that names the UK, and no published date for when the UK was first restricted.
In practice the restriction is Polymarket's own geoblock. We found no ISP or DNS block, no app-store removal and no court order in the UK, and we found no UK order for a block of the kind the French or Italian regulators have issued. Polymarket continues to list UK political markets, such as the next Prime Minister, which press reports describe as viewable but not tradable from the UK. Polymarket's Help Center says that using a VPN to get around its restrictions violates its Terms of Use.
Kalshi's Member Agreement (section VI, undated, fetched September 24, 2026) lists the United Kingdom as a Restricted Jurisdiction. The UK was on Kalshi's first published list, in the Exchange Notice of October 23, 2025, on the notice of November 4, 2025, and on the current agreement; Kalshi's help article on trading from outside the US (updated March 20, 2026) defers to that agreement. We found no Kalshi notice or blog post naming the UK, no UK licence application by Kalshi and no UK action naming Kalshi.
Two regulators divide the field. The Gambling Commission regulates gambling in Great Britain (England, Scotland and Wales; Northern Ireland has separate law) under the Gambling Act 2005. In a blog post of February 4, 2026 by Brad Enright, its Director of Strategy, it said prediction-market products' core aspects are akin to a betting exchange and ‘would appear to fall within the definition of a “betting intermediary”’, so an operator needs a Commission operating licence; that providing facilities for gambling without one is a criminal offence; and that unlicensed operators ‘should take steps to ensure they are not targeting or transacting with consumers in Great Britain’. The post names neither Polymarket nor Kalshi and cites no section numbers. The Financial Conduct Authority (FCA) regulates contracts on financial outcomes. Its policy statement PS19/11 of March 29, 2019 made permanent a ban on firms marketing, distributing or selling binary options to retail clients in or from the UK, in force since April 2, 2019.
The FCA's perimeter report (published March 26, 2026, updated July 16, 2026) has a section on prediction markets. It says platforms linked to non-financial events such as sporting or political outcomes fall under the Gambling Commission's remit, that platforms referencing financial or certain climatic events fall within the FCA's perimeter, and: ‘Our current view is that the financial PMPs we have seen are binary options. As such they remain subject to the FCA's permanent ban on the sale of binary options to retail consumers, which we consider appropriate given the speculative, gambling-like nature of these contracts and the high risk of consumer harm.’ The FCA added that it ‘will consider whether we want to do further work on access to these products, and/or clarify the perimeter’. The report names no platform.
The government's position is in written parliamentary answer HL14169, given on February 16, 2026 by Baroness Twycross, the gambling minister, to a question from Baroness Bennett of Manor Castle: ‘In order to operate in Great Britain, any prediction market would require a licence from the Gambling Commission… If approved, they would be classified as a “Betting Intermediary” and subject to regulation under the Gambling Act 2005. We will monitor the potential impacts of prediction markets and consider further action if needed.’ The UK was not among the nine European gambling regulators that signed the joint statement on prediction markets of June 18–19, 2026, and EU-level statements don't cover it.
Actions: none found. As of September 26, 2026 our searches found no Gambling Commission enforcement notice, cease-and-desist, unlicensed-operator listing, payment-blocking request or prosecution naming Polymarket or Kalshi, no FCA warning-list entry for either, no ISP block and no court case. That means we found none, not that none exists. Two press reports describe movement without action. On September 7, 2026 The Times, as relayed by CoinDesk, reported that the FCA had held talks with platforms about easing the 2019 retail ban for financial event contracts, naming Polymarket and Kalshi; the FCA's published position was unchanged, and any change to the ban would need a public consultation, none of which had been published as of September 26, 2026. On September 22, 2026 SBC News reported a Polymarket lobbying effort in London and Brussels seeking classification as a financial service, and quoted the Gambling Commission: ‘If a prediction market operator was to launch here in Great Britain, we do not believe they would be able to classify themselves as non-gambling products.’ We found no UK licence application by either platform.
The entries below are rendered from the same dated data as the main country table, newest first. Each row shows the date, the authority as it names itself, the type of action, the platform it concerns and the source with its type.
No public action found. As of 2026-09-24, our searches found no regulator, court or police action naming Polymarket or Kalshi in the United Kingdom. That means we found none, not that none exists.
This section reports what the law and the authorities in the United Kingdom have said about people who take part in these markets, and any enforcement against users that has been made public. It describes; it doesn't advise.
Every UK statement addresses operators. The Gambling Commission's licensing requirement, and the offence of providing facilities for gambling without a licence, apply to those who offer gambling; the FCA's binary-options ban binds firms that sell to retail clients and is not a prohibition on individuals. Neither the Commission's blog, the FCA's report nor the ministerial answer says anything about penalties for consumers.
We found no prosecution of a UK user of either platform, no HMRC guidance on prediction-market gains and no UK bank restriction naming the platforms. Whether trading is lawful for you is not something this page decides.
The UK is the home of licensed betting exchanges: Betfair, licensed and regulated by the Gambling Commission, launched on June 9, 2000, and Smarkets and Matchbook operate under the same regime. The Commission's ‘betting intermediary’ framing points prediction-market operators to that licence type; Polymarket's reported lobbying seeks the opposite classification, as a financial service. Separately, Gibraltar, a British Overseas Territory with its own regulator, licensed ADI Predictstreet as its first prediction-market betting intermediary under a new framework in July 2026, as reported by SBC News; that is not a UK licence and doesn't change the position in Great Britain.
PolyKal is a read-only research site, and it does not restrict access by country, including from the United Kingdom. Its public pages, including prices on both platforms, order-book depth, after-fee cost comparisons, the fee calculator, and large-trade and whale data, need no account. You don't need a VPN to use them.
Viewing public market data is not trading. PolyKal doesn't place orders, hold funds or give access to trading on either platform, and a restriction on Polymarket or Kalshi in the United Kingdom still applies to trading there. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions; getting around a block can also break local law. PolyKal doesn't help anyone get around them.
Start with the compare page, the fee calculator or large trades, or read how Polymarket works and how Kalshi works.
the United Kingdom is one of 27 countries, plus the United States, that PolyKal tracks. The full availability table shows every country's status under each platform's rules and its regulator actions side by side, with the same dates and sources as this page, and its change log lists every edit we make.
Every entry is re-checked at least once a quarter, and sooner when a platform or regulator announces a change. The next scheduled full re-check is shown in the sidebar.
We don't give a verdict for you. What the record shows: Polymarket's own Help Center (updated August 14, 2026) lists the UK as blocked, so under its rules people in the UK can't trade. The Gambling Commission said on February 4, 2026 that a prediction-market operator needs a betting-intermediary licence to operate in Great Britain, and the FCA said in March 2026 that the financial prediction-market products it has seen are binary options covered by its 2019 ban on sales to retail consumers. Both statements are about operators and firms; we found no UK action naming Polymarket, and neither statement says anything about penalties for users. Check the current law and the platform's terms for your own situation.
Kalshi's Member Agreement lists the United Kingdom as a Restricted Jurisdiction, and has since its first published list of October 23, 2025, so under Kalshi's own rules people in the UK are excluded. We found no UK regulator, court or police action naming Kalshi; the Gambling Commission's and FCA's statements described on this page apply to prediction-market operators generally.
Not by the UK authorities: as of September 26, 2026 we found no UK order, block or court case naming Polymarket. The restriction people in the UK meet is Polymarket's own geoblock, which its Help Center (updated August 14, 2026) lists as blocked and its developer docs as close-only. The Gambling Commission's position is that an operator needs a licence to operate in Great Britain; we found no UK licence application by Polymarket.
Not as such. The FCA's ban, made permanent by PS19/11 and in force since April 2, 2019, stops firms from marketing, distributing or selling binary options to retail clients in or from the UK. In its perimeter report of March 26, 2026 the FCA said the financial prediction-market products it has seen are binary options and so fall under that ban, while products on sporting or political outcomes fall to the Gambling Commission. The Times reported on September 7, 2026, as relayed by CoinDesk, that the FCA had held talks about easing the ban; its published position had not changed as of September 26, 2026.
Yes, on PolyKal. PolyKal is a read-only research site that shows prices, order-book depth and fee comparisons for both platforms without an account, and it does not restrict access from the UK. Viewing data is not trading: PolyKal places no orders and gives no access to either platform, and both platforms' own restrictions on the UK still apply to trading there.
No. Polymarket's help center says that using a VPN to get around its restrictions violates its Terms of Use, and Kalshi's Member Agreement excludes people in its restricted jurisdictions. Getting around a block can also break local law. You don't need a VPN to research these markets: PolyKal's prices, order books and fee calculator don't require one.
We re-check every country page at least once a quarter, and sooner when a platform or regulator announces a change; each rule and action on the page shows its own date and source. If you spot something out of date for the United Kingdom, email [email protected] with a link to the new rule or order.
Every statement on this page rests on the sources below. Platform rules were checked against Polymarket's and Kalshi's own pages on September 24, 2026; regulator, court and police actions were checked against the sources listed on September 24–26, 2026. Each source is marked as official, a platform document or a secondary report. Where only secondary reporting was available, we cite it and say so; where official sources conflict, we report both. We re-verify this page quarterly.
Official: Gambling Commission, ‘Prediction markets: here's what you need to know’ (blog by Brad Enright) (February 4, 2026); FCA, PS19/11 ‘Product intervention measures for retail binary options’ (March 29, 2019); FCA, Perimeter Report, section ‘Prediction markets’ (March 26, 2026, updated July 16, 2026); UK Parliament, written answer HL14169 by Baroness Twycross (February 16, 2026).
Platform documents specific to the UK: Kalshi Exchange Notice, Updated Member Agreement (October 23, 2025; first Restricted Jurisdictions list, including the United Kingdom).
Secondary reports: CoinDesk, ‘UK regulator weighs easing financial prediction-market ban’ (relaying The Times) (September 7, 2026); SBC News on Polymarket's European lobbying and the Gambling Commission's response (September 22, 2026).
Platform documents (all countries): Polymarket Help Center: Geographic restrictions (updated August 14, 2026), Polymarket developer docs: Geoblock (undated), Kalshi Member Agreement (undated; fetched September 24, 2026) and Kalshi Help Center: trading from outside the US (updated March 20, 2026).
PolyKal is an independent research tool. We are not affiliated with, endorsed by, or operated by Polymarket or Kalshi. We report each platform's published rules and public regulator, court and police actions in the United Kingdom; we don't say whether trading is legal for you, and we don't help anyone get around a platform's restrictions. Last reviewed September 26, 2026. Not legal or financial advice.
Know of a newer rule, order or court decision for the United Kingdom? Email [email protected] with a link to it.