The UK’s Financial Conduct Authority published its most comprehensive crypto rulebook on June 30, 2026, bringing a wide swath of cryptoasset activities under FCA oversight for the first time, covering prudential standards, market abuse provisions, and specific requirements for stablecoin issuers.

What the new rules actually require

The regulatory framework stems from the Financial Services and Markets Act 2000 (Cryptoassets) Regulations 2026, which Parliament passed in February 2026. Firms wanting to operate under the new regime can submit authorization applications starting September 30, 2026, through February 28, 2027. The full framework doesn’t kick in until October 25, 2027.

One notable concession to…