UK Crypto Regulations: Hidden Pitfalls for Unwary Firms

The UK's Financial Conduct Authority has unveiled proposed crypto regulations that may broaden the definition of custody, potentially ensnaring platforms and software providers who do not consider themselves custodians. The FCA's Cryptoasset Perimeter Guidance, published recently, outlines several technical pitfalls that firms handling client crypto assets must be aware of. A key aspect of the rules is the 24-hour custody threshold, wherein 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 providing 'added value' features, such as user dashboards or yield tools, may lead to the loss of their pure tech exemption, necessitating full approval for arranging staking. The FCA aims to strengthen consumer protections and support fair, transparent markets with these new regulations. Notably, the authority 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 is seeking feedback on these proposals until June 3, 2026, and intends to publish finalized rules this summer, followed by the final perimeter guidance in September. The new regulations will force all entities providing crypto services to transition from the current money-laundering registration systems to a stricter approval regime under the UK's Financial Services and Markets Act. Firms have a five-month application window, from September 30, 2026, to February 28, 2027, to apply for approval, and only those who apply during this period will be allowed to continue operating while the regulator reviews their applications.