UK Bank Griffin Raises $20M Series B to Build Stablecoin Infrastructure

UK-licensed bank Griffin has raised $20 million in a Series B round at a valuation above $100 million, the company announced on November 12, 2026. Octagon Partners led the round, with existing investors Notion Capital, A+ Ventures, Nordic Ninja and Breega participating. The raise brings Griffin's total funding to roughly $95 million since inception.

The capital allocation signals where Griffin believes regulated banking is heading. Part of the money is headed into a segment most licensed banks still treat cautiously: stablecoin services.

Where will the $20 million go?

Griffin has assigned the new capital two main jobs, according to the company's announcement.

• Card issuing: Griffin plans to launch branded debit and credit cards for its fintech clients.
• Stablecoin infrastructure: This workstream has two components — reserve services for companies issuing or handling stablecoins, and onchain payment rails for cross-border money movement.

The stablecoin push is the more notable commitment. Griffin does not plan to compete with stablecoin issuers; instead, it wants to become the regulated banking partner that holds their reserves and processes their payments. That positioning matches its existing model — Griffin already sells banking plumbing to fintechs, so serving stablecoin firms is an adjacent expansion rather than a strategic pivot.

The reserve-services business carries a caveat the announcement does not address: holding reserves for stablecoin issuers exposes a bank to redemption demands that can concentrate sharply in stress periods. Whether Griffin's capital base — under $100 million in valuation terms — can absorb such flows remains an open question the company has not yet answered.

What does the underlying business look like?

Griffin is not a pre-revenue venture betting on future demand. The bank already supports more than 80 companies, including Uber, and serves over 300,000 end customers through its embedded-banking platform.

Its payment volumes are concrete: nearly 10 million payments processed each year. Recurring revenue grew 3.2 times year-on-year as of September 2026 — a pace that, if sustained, would double revenue roughly every seven months, though few infrastructure businesses hold such growth for long.

Griffin received its full UK banking license from the Prudential Regulation Authority's regime in March 2024, giving it roughly two and a half years of licensed operation at the time of this raise. The company also plans to apply for a US banking license in 2027, which would place its American expansion into a regulatory review process that typically runs well over a year.

Why is a licensed bank moving into stablecoins?

The move reflects a broader blurring between traditional banking and blockchain-based finance. Stablecoin issuers need regulated institutions to hold the fiat reserves backing their tokens, and banks with existing fintech infrastructure are the natural candidates. Griffin is betting that demand for compliant reserve custody and onchain settlement rails will outpace the caution most of its licensed peers still show.

That bet is not guaranteed. Stablecoin reserve custody remains a niche business, and regulatory frameworks for tokenized settlement are still forming on both sides of the Atlantic. Griffin's advantage is timing and licensing; its risk is building infrastructure before the demand curve is proven.

The takeaway: a fully licensed UK bank has now put $20 million behind stablecoin plumbing, betting regulation and infrastructure converge faster than its peers expect. The 2027 US license application will be the next hard checkpoint on that thesis.