Britain's Financial Conduct Authority (FCA) warned that crypto trading applications could require regulatory authorization if their software selects customer transaction routes based on price, liquidity, costs, or execution speed.
In draft guidance published October 21, the FCA said such applications may be arranging crypto deals, an activity requiring authorization under rules scheduled to take effect October 25, 2027. The interpretation could bring decentralized finance (DeFi) aggregators and automated trading interfaces within the UK's licensing regime.
Exemption criteria and discretionary involvement
The FCA proposed a technical-services exemption intended to protect software providers whose applications simply connect customers to third-party trading platforms or decentralized protocols without influencing execution.
However, applications that evaluate competing liquidity sources, recommend trading venues, or determine how transactions are executed could require regulatory authorization. The regulator identified several indicators of discretionary involvement, including modifying transaction instructions, determining execution timing, and selecting routes based on counterparty risk or expected trading outcomes.
Applications promising customers the best available execution may face greater scrutiny, as such commitments can indicate that operators are making judgments about competing trading options.
The FCA noted that automating these decisions does not shield developers or operators from regulation. Algorithms execute choices established by their providers, including criteria determining which exchanges or liquidity sources receive customer orders. The assessment extends to how trading software is designed and operated, even when individual transactions complete without direct human intervention.
DeFi platform governance and compliance
The FCA's proposals extend beyond trading interfaces to operators of decentralized platforms. Distributed governance, smart contracts, and automated systems do not automatically eliminate regulatory obligations where identifiable individuals or businesses exercise control over services.
The regulator will consider operational responsibilities, decision-making authority, and economic interests when determining whether an entity carries out regulated activities. This could complicate compliance arrangements for DeFi businesses whose developers, governance participants, and commercial operators share responsibility for maintaining trading infrastructure.
Timeline and next steps
Existing UK crypto businesses seeking transitional protections must submit applications between September 30, 2026, and February 28, 2027. The FCA requested feedback on its proposals by November 18, with final guidance targeted for January 2027, though the consultation paper identifies spring 2027 as a potential timeline.
The FCA said it may grant additional time to complete arranging-permission details where the proposed exemption materially affects an application. Affected operators can seek pre-application support from the regulator to assess their transaction-routing systems and determine whether they need to change their operating models or authorization applications before the February deadline.
