The UK's Financial Conduct Authority opened its formal authorization application window for cryptoasset firms on September 30, initiating firm-by-firm reviews ahead of a new regulatory regime that takes effect on October 25, 2027. The move subjects cryptoasset companies to full financial supervision in the UK for the first time, with assessments covering consumer protection, client asset safeguarding, market integrity and financial soundness.

Firms intending to operate in the UK must complete their applications by February 28, 2027. Authorization will not be granted automatically, and businesses that miss the deadline will lose access to the regime's continuity provisions. Firms that file on time may continue operating—and onboard new customers—until the FCA reaches a final decision, even if that review extends beyond the implementation date. Those that fail the assessment will be barred from providing regulated services once the regime is live.

What does the new regime cover?

The scope extends across five activity categories:

• Stablecoin issuance
• Operation of cryptoasset trading platforms
• Dealing and intermediation
• Custody
• Staking arrangements

The FCA said it will assess each applicant's client asset management controls, safeguards against market manipulation, and capital resilience, calibrated to the nature of its business.

Until now, UK oversight of cryptoasset firms has been limited to anti-money laundering rules and financial promotions requirements. The new framework shifts supervision to full authorization reviews under the Financial Services and Markets Act. Firms already registered under the Money Laundering Regulations will need fresh authorization under the new framework, and companies holding payment services or e-money registrations will also need new permissions—or amendments to existing ones—to continue cryptoasset activities.

The FCA published its final regulatory framework for trading platforms, custody providers and stablecoin issuers in June. With the application window now open, the process has moved from rulemaking to individual authorization reviews.

Will existing registrations carry over?

No, according to Emma Banymandhub, CEO of payments industry body The Payments Association. She stressed that registrations under the Money Laundering Regulations will not automatically transfer to the new regime, and that firms must treat this as a new authorization process and realistically assess the standards they will be required to meet.

FCA Director of Authorizations Dominic Cashman framed the regime as a benefit for both sides of the market. "The UK's new cryptoasset regime will provide stronger protections for consumers and give firms a clear framework in which to operate," he said.

What happens to smaller operators?

The compliance burden is likely to weigh unevenly. Banymandhub noted that smaller firms and those in growth phases may need to allocate additional management resources to meet the FCA's more stringent requirements, strengthening organizational infrastructure and bolstering capital. Firms that fail to secure authorization face a stark choice after October 2027: exit the UK market or pivot to services outside the regulatory perimeter.

The regime positions the UK with a domestic equivalent to the EU's Markets in Crypto-Assets Regulation (MiCA), which has been phasing in since Brexit. For London-based cryptoasset firms, the February 28, 2027 application deadline now functions as the effective gate for continued market access.