UK Crypto Regulations: Hidden Pitfalls for Unwary Firms

The UK's Financial Conduct Authority has unveiled proposed crypto regulations that could broaden the definition of custody, potentially ensnaring platforms and software providers that do not consider themselves custodians. The FCA's Cryptoasset Perimeter Guidance, published recently, outlines several technical pitfalls for firms handling client crypto assets. A key aspect of the rules is the 24-hour threshold for custody, where any firm or platform holding client assets for more than a day during trade settlement may be classified as a regulated custodian, requiring a full safeguarding license. Validators and node operators must also exercise caution, as the regulator warns that providing 'added value' features, such as user dashboards or yield tools, will result in the loss of their pure tech exemption, necessitating full approval for arranging staking. The FCA aims to enhance consumer protections and support fair, transparent markets with its new perimeter. Notably, the regulator has addressed the 'shadow custody' issue, clarifying that if a crypto service provider can theoretically override a client's authority, it is considered a custodian, even if it guarantees not to exert that power. Stablecoin issuers are also subject to stringent requirements, with issuance only permitted if the issuer is established in the UK and manages the entire lifecycle, from initial offering to redemption and reserve maintenance. The FCA has invited feedback on these proposals until June 3, 2026, and plans to publish finalized rules in the summer, followed by the final perimeter guidance in September. The new regulations will require all entities providing crypto services to transition from the current money-laundering registration system to a stricter approval regime under the UK's Financial Services and Markets Act. Firms intending to continue operating under the new regulations must apply within a five-month window, from September 30, 2026, to February 28, 2027, or face potential fines, suspensions, and permanent closures. Only those who apply during this period will be eligible for 'savings provisions' that allow them to continue operating while the regulator reviews their application.