Crypto Exchange Development in the UK: Rules and Roadmap

This guide is a general overview for founders and product teams, not legal advice. Regulations change, so always confirm current requirements with qualified legal advisers.

The UK is one of Europe's largest crypto markets and a major financial centre. It's also outside the EU, so MiCA doesn't apply. Instead, UK crypto businesses follow rules set by the Financial Conduct Authority (FCA) and UK legislation. Here's what to know before launching an exchange in the UK.

FCA registration for AML

Since January 2020, businesses carrying out cryptoasset exchange or custody activities in the UK must register with the FCA under the money laundering regulations. Registration requires strong anti-money-laundering systems, fit and proper owners and managers, and a credible business plan. The FCA has historically rejected many applications, so preparation is crucial.

Financial promotions rules

Since October 2023, promoting cryptoassets to UK consumers has been tightly regulated. Key requirements include:

• Promotions must be communicated or approved by an appropriately authorised or registered firm
• Clear, prominent risk warnings
• A cooling-off period for first-time investors
• Appropriateness assessments before consumers can invest
• A ban on incentives such as refer-a-friend bonuses for investing

These rules shape your onboarding flow, so they must be designed into the product, not added later.

A fuller regime is coming

The UK government has set out plans to bring a wider range of cryptoasset activities, including operating trading platforms and custody, into the regulated perimeter, with FCA authorisation replacing the current registration-only approach. Firms planning UK launches should follow these developments closely and design platforms that can meet authorisation-level standards.

Features UK users expect

• GBP deposits through Faster Payments and Open Banking
• Card purchases with clear fees
• ISA-style simplicity in the user experience
• Tax reporting support for capital gains
• Strong customer support and complaints handling

Technology requirements

• KYC, AML and sanctions screening
• Travel Rule compliance for transfers
• Appropriateness tests and cooling-off flows
• Secure custody and segregation of client assets
• Operational resilience and incident response
• Record-keeping and FCA reporting

UK vs EU strategy

Many companies serve both the UK and the EU. Because they're regulated separately, you'll usually need FCA registration for the UK and MiCA authorisation in an EU member state for the EU. A platform with configurable compliance features per region makes this much easier.

Launch roadmap

1. Legal review of activities and the current UK rules.
2. Build AML, promotions and onboarding features into the product.
3. Prepare and submit FCA registration.
4. Set up banking and payments partners for GBP.
5. Security testing and pilot launch.
6. Plan for authorisation under the upcoming regime.

Designing compliant onboarding for UK consumers

UK rules for crypto promotions directly shape your onboarding. A compliant flow typically includes a personalised risk warning, a cooling-off period of at least 24 hours for first-time investors, client categorisation, and an appropriateness assessment that checks whether the investor understands the risks. Design these steps to be clear and respectful rather than a hurdle; well-designed flows protect consumers and reduce complaints while keeping conversion reasonable.

Operational resilience

UK regulators place strong emphasis on operational resilience: identifying important business services, setting impact tolerances and being able to recover from disruptions. For an exchange, that means resilient infrastructure, tested backups, incident response plans and clear communication with customers during outages.

Consumer Duty mindset

The FCA's Consumer Duty sets expectations for authorised firms to deliver good outcomes for retail customers. Even before full crypto authorisation applies, designing products with this mindset, such as fair value, clear communication and good support, prepares you for the coming regime and builds trust with UK users.

Partnerships as an alternative

• Partner with an FCA-registered firm to offer crypto features
• Offer non-custodial tools with lighter obligations
• Start with B2B services such as infrastructure or analytics
• Launch in other markets first while preparing UK applications

GBP banking and payments

UK customers expect instant deposits through Faster Payments and, increasingly, Open Banking. Securing banking partners that support crypto businesses can take time, so start early. Design your deposit flows to match your partners' capabilities, and include clear information about processing times and limits.

Common mistakes

• Assuming EU MiCA authorisation covers the UK
• Launching promotions before they're approved
• Treating appropriateness tests as a box-ticking exercise
• Underestimating FCA registration timelines
• Not planning for the upcoming authorisation regime

Planning for these from day one avoids costly redesigns and delays.

Tax reporting for UK users

UK users pay capital gains tax on crypto disposals and may need to report income from staking or rewards. Exchanges that make tax reporting easy, with downloadable transaction histories, gain and loss summaries, and integrations with popular tax tools, stand out. International reporting frameworks for crypto are also expanding, which will require exchanges to collect and report more information about customers' transactions to tax authorities. Building a solid data model now prepares you for these obligations.

Good tax tools also reduce support requests around the end of the tax year, when users scramble to gather their records. A clear annual statement is a simple feature that users value highly.

Frequently asked questions

Does MiCA apply in the UK?

No. The UK has its own rules. If you serve both markets, you'll need to comply with both.

Can I market to UK users from abroad?

Promotions aimed at UK consumers must follow UK financial promotions rules wherever your company is based.

How long does FCA registration take?

It can take many months, and applications need to be thorough. Start early and expect detailed questions.

Key takeaways

• The UK is regulated separately from the EU.
• FCA registration and promotions rules apply now.
• A fuller authorisation regime is coming.
• Design onboarding around UK consumer protections.

Build your UK exchange

AnAInfo builds crypto exchanges with configurable compliance for the UK and EU, and supports UK businesses with Builder.ai recovery. See our Europe & UK page, or contact us.