Britain's Youngest Billionaire: The 28-Year-Old Who Built a Fintech Giant

Harrison Clarke is 28 years old. He is also, by most credible estimates, worth approximately £1.4 billion. He became a billionaire last November, when a secondary share sale in his payments technology company, Meridian Pay, implied a valuation of £1.4 billion. He found out while sitting on the Central Line on his way to the office.

"I was checking my phone on the train and saw a message from our CFO with the final valuation number," Clarke told TGBN. "I thought there was a typo. I made him send it again with more decimal places to make sure."

The Origin

Clarke founded Meridian Pay in 2020, at 22, having spent his final year at the London School of Economics increasingly frustrated by the cost and complexity of cross-border payments for small businesses. His first product was a multi-currency business account with real-time FX conversion at interbank rates — a straightforward proposition that immediately resonated with the millions of UK SMEs that export to or import from Europe and further afield.

The Growth

Meridian Pay now processes over £40 billion in annual payment volume, employs 1,200 people, and operates in 38 markets. Its Series D round, closed eight months ago, raised £300 million at the £1.4 billion valuation. Several of the largest institutional investors in European fintech are shareholders.

The Person

What strikes anyone who spends time with Clarke is how little his wealth appears to have changed him. He lives in a flat in Hackney, takes public transport to work, and expresses genuine discomfort with the idea that his story should be defined by a number. "The money is a byproduct of building something useful," he says. "If that's what the outcome is, I'll take it. But it's not the point."