The CFTC ordered GAIN Capital UK Limited, the entity behind the FOREX.com and City Index brands in Britain, to pay 250,000 dollars in civil penalties plus 241,671 dollars in disgorgement on 8 June 2020, after finding the firm acted as a counterparty to United States based retail forex customers for over five years without ever registering as a Retail Foreign Exchange Dealer.
The CFTC order covers conduct running from February 2014 to March 2019. During that window, GAIN Capital UK accepted US clients despite lacking the authorisation required to serve them, including onboarding individuals who submitted US mailing addresses and documents confirming US residence. In one instance detailed in the order, a customer told a GAIN UK employee directly, during the account application itself, that she was a university student in the United States, and the account was opened regardless.
How the Supervision Failure Compounded the Registration Breach
The registration gap was not the only problem the CFTC identified. GAIN Capital UK also allowed an unregistered commodity trading advisor to solicit US customers on its behalf without disclosing that the advisor lacked its own registration, and the order found the firm inadequate supervision systems failed to catch clear warning signs of that advisor conduct. One client working with the unregistered advisor lost 280,000 dollars, while GAIN UK collected 241,671 dollars in commissions tied to that same relationship, the figure that became the disgorgement amount in the final order.
Is GAIN Capital UK Still Serving US Traders
No, and the firm broader footprint has continued shrinking well past the 2020 order. GAIN Capital UK operates as a distinct legal entity from StoneX Financial Ltd, the company that actually runs FOREX.com and City Index for UK clients today and remains separately and fully authorised by the FCA. In January 2026, StoneX confirmed that GAIN Capital UK plans to eventually surrender its own FCA licence once a related Dubai licence transfer is complete, while stating explicitly that this internal restructuring does not affect FOREX.com or City Index operations or their UK regulatory status.
Industry Implication
A five year old order can still matter when it establishes exactly the kind of failure that regulators continue watching for: a broker treating a customer own disclosed US residency as a detail to route around rather than a hard stop. The CFTC did not merely fine the registration gap, it fined the supervision failure sitting underneath it, the part of the case that shows a firm control environment did not catch a problem that a customer had already flagged out loud. That combination, a real registration breach plus a documented failure to listen to the customer directly in front of it, is the pattern worth remembering longer than the specific dollar figures attached to it.
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The most damning detail in this case is not the registration gap, it is the moment a customer said out loud that she was a US student and the account got opened anyway. That is not a paperwork failure, that is a firm choosing revenue over a clear compliance signal sitting directly in front of its own staff. GAIN Capital UK entity has since been winding down and separating itself from the FOREX.com and City Index brands that StoneX now runs under full FCA authorisation, which is the right outcome, but it does not erase what the underlying order documents. BestForex.io reads a case like this as a reminder that the corporate structure sitting behind a familiar brand name can matter as much as the brand name itself when something goes wrong.
About GAIN Capital
GAIN Capital UK Limited was the United Kingdom entity historically operating the FOREX.com and City Index forex and CFD brands, before StoneX Group acquired GAIN Capital Holdings in 2020. FOREX.com and City Index continue operating in the United Kingdom today under StoneX Financial Ltd, a separate legal entity that remains fully authorised and regulated by the FCA. GAIN Capital UK itself is winding down internally, with StoneX confirming in January 2026 that the entity plans to eventually surrender its FCA licence as part of a broader restructuring that does not affect the customer facing FOREX.com or City Index businesses.
Frequently Asked Questions
Is FOREX.com regulated in the UK?
Yes. FOREX.com in the United Kingdom is operated by StoneX Financial Ltd, a distinct legal entity from GAIN Capital UK Limited, and remains fully authorised and regulated by the FCA.
Why was GAIN Capital UK fined by the CFTC?
The CFTC found GAIN Capital UK acted as a counterparty to United States retail forex customers for over five years without registering as a Retail Foreign Exchange Dealer, and separately failed to supervise an unregistered commodity trading advisor soliciting US clients on its behalf.
Is GAIN Capital UK still operating?
The entity is winding down. StoneX confirmed in January 2026 that GAIN Capital UK plans to eventually surrender its FCA licence, though this does not affect the FOREX.com or City Index brands, which StoneX Financial Ltd continues to operate under full UK authorisation.