UK FCA Crypto Rules: What Traders Need to Know

The UK's FCA has finalised its crypto asset regulatory regime. Here is what it means for UK-based crypto traders, exchanges, and DeFi users.

The UK Financial Conduct Authority took a step-by-step approach to crypto regulation. In 2025, the full UK crypto framework came into effect, covering exchanges, promotions, and consumer protections.

What Requires FCA Authorisation

Exchanges offering crypto trading to UK retail customers must be FCA registered. Crypto advertisers must follow strict financial promotions rules — no celebrity endorsements without risk warnings, and no referral bonuses without compliance checks.

DeFi Grey Area

DeFi protocols without a central entity are in a genuine grey zone. The FCA focuses enforcement on "points of centralisation" — the team, website, or interface rather than smart contracts themselves. Truly decentralised protocols remain relatively untouched.