FCA Picks 4 Firms for UK Stablecoin Sandbox

The UK Financial Conduct Authority has selected four firms to test stablecoin products in its Regulatory Sandbox, marking a key step in the UK’s push to finalize stablecoin rules. The FCA said the testing will begin in Q1 2026 and will help shape the country’s final stablecoin framework later this year.

The selected firms are Monee Financial Technologies, ReStabilise, Revolut, and VVTX, chosen from 20 applications. The FCA said the cohort is focused on helping firms trial stablecoin services in real-world conditions with safeguards while regulators assess how proposed rules work in practice.

FCA moves from consultation to live stablecoin testing

The FCA said the sandbox cohort is part of its broader effort to support innovation and growth in UK financial services, while also testing policy proposals before final rules are locked in. The regulator described the sandbox as a controlled environment where firms can test products with FCA feedback and oversight.

This is important because the FCA has already consulted on core parts of the UK crypto regime, including stablecoin issuance, custody, prudential requirements, conduct, and disclosures. In the press release, the regulator said those consultations are now substantively complete and policy statements are expected this summer.

The four selected firms cover different stablecoin use cases

The FCA said the four firms represent a range of use cases, including payments, wholesale settlement, and crypto trading. It also noted that each firm intends to issue UK stablecoins under the future regulatory regime.

On its stablecoin cohort page, the FCA gives more detail on each proposal:

• Monee Financial Technologies is building stablecoin infrastructure tied to settlement and digital securities workflows.
• ReStabilise is targeting institutional stablecoin issuance and custody, including treasury, FX settlement, and asset management use cases.
• Revolut is exploring a GBP-denominated stablecoin backed 1:1 by pound reserve assets.
• VVTX is building a UK-based payments ecosystem with a proprietary Layer 1 and its own GBP stablecoin.

Testing starts in Q1 as UK rulemaking timeline advances

The FCA said sandbox testing begins in Q1 2026, with firms operating under their current permissions and registrations during the test phase. The regulator also said findings from the cohort will feed into the final stablecoin rules due later in 2026.

The broader implementation timeline is also becoming clearer. In its notes, the FCA said the application gateway for firms seeking authorization under the new crypto regime will open in September 2026, and the new regime is set to go live in October 2027.

FCA frames stablecoins as payments and market infrastructure

In the press release, FCA payments and digital assets director Matthew Long said the regulator is supporting UK stablecoin issuers so they can be trusted for payments, settlement, and trading. The FCA also linked the sandbox to the UK government’s National Payments Vision and to other innovation initiatives such as the Digital Securities Sandbox.

In short, the FCA is no longer just consulting on stablecoins — it is now testing real products with named firms before finalizing the rulebook. That makes this a meaningful transition from policy design to live supervisory experimentation.

Why it matters for crypto

• The UK is moving stablecoin regulation from consultation stage into live testing with real firms.
• Revolut’s inclusion signals mainstream fintech interest in GBP stablecoins under UK rules.
• The selected use cases show the FCA is treating stablecoins as payments and settlement infrastructure, not only trading tools.
• Sandbox feedback could directly influence final UK stablecoin rules expected later in 2026.
• Firms planning UK stablecoin launches now have clearer signals on timing and regulatory priorities.

What to watch next

• Q1 2026 sandbox testing updates and any early feedback from the FCA or participating firms.
• The FCA’s policy statements this summer, especially on stablecoin issuance and custody rules.
• Whether more firms are added later or whether the initial cohort remains the only stablecoin sandbox batch.
• Details on how stablecoins may be used in the Digital Securities Sandbox with the Bank of England.
• Preparation steps ahead of the UK crypto authorization gateway opening in September 2026.

Source: FCA press release and FCA Regulatory Sandbox stablecoins cohort page