UK's Crypto Regulations: Hidden Pitfalls for Unwary Businesses

The UK's Financial Conduct Authority has introduced proposed crypto regulations that could significantly broaden the definition of custody, potentially ensnaring platforms and software providers that do not currently identify as custodians. The FCA's Cryptoasset Perimeter Guidance, published recently, outlines several technical complexities that firms handling client crypto assets must be aware of. A key aspect of the rules is the 24-hour threshold for custody, whereby any firm or crypto platform holding client assets for more than a day during trade settlement may be subject to the regulated custodian classification, requiring a full safeguarding license. Additionally, validators and node operators must exercise caution, as the provision of 'added value' features, such as user dashboards or yield tools, may necessitate seeking full approval for arranging staking. The regulator has also addressed the issue of 'shadow custody,' clarifying that if a crypto service provider can theoretically override a client's authority, it is considered a custodian, regardless of whether it intends to exert that power. The FCA has emphasized that the use of smart contracts, public blockchains, or decentralization elements does not exempt an arrangement from regulation. For stablecoin issuers, the rules are clear: issuance is only permissible 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 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 more stringent approval regime under the UK's Financial Services and Markets Act. Firms that wish to continue operating under the new regulations will have a five-month application window, from September 30, 2026, to February 28, 2027, and failure to meet this deadline may result in fines, suspensions, or permanent closures. Only those who apply during the application period will be eligible for 'savings provisions' that allow them to continue operating while the regulator reviews their application.