UK's New Crypto Regulations: A 24-Hour Deadline That Could Catch Firms Unaware

The UK's Financial Conduct Authority has introduced proposed crypto regulations that could broaden the definition of custody, potentially affecting platforms and software providers that do not consider themselves custodians. The FCA's Cryptoasset Perimeter Guidance, published recently, outlines several technical traps 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. Additionally, validators and node operators must exercise caution, as providing 'added value' features such as user dashboards or yield tools may necessitate seeking 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, even if it guarantees not to exert that power. Stablecoin issuers are also subject to strict guidelines, with issuance only permitted if the issuer is established in the UK and manages the entire lifecycle. The FCA has requested feedback on these proposals, with a consultation period ending on June 3, 2026, and intends to publish finalized rules later this summer. The new regulations will require all entities providing crypto services to transition to a stricter approval regime under the UK's Financial Services and Markets Act, with a five-month application window from September 30, 2026, to February 28, 2027.