Christopher Harborne, whose wealth was first built in aviation fuel rather than digital assets, is now estimated to be worth £18.2 billion, making him the sixth-richest person in the UK, according to The Sunday Times Rich List 2026. The report says most of that fortune comes from an approximately 12% stake in Tether.
ABMedia said Harborne does not fit the usual profile of a crypto billionaire. He did not found an exchange, launch a token, or make his first fortune through mining. His route into crypto ownership came after years as an international businessman and then a contrarian investment made during the fallout from the 2016 Bitfinex hack.
His first fortune came from aviation fuel
Harborne was born in 1962. He studied at the University of Cambridge and later earned an MBA from INSEAD. Early in his career, he worked as a management consultant at McKinsey before moving into entrepreneurship in Asia.
The business that established his early wealth was in aviation. His company, AML Global, operates in global aviation fuel procurement and supply, serving private jet and business aviation clients. The report says the company also secured U.S. Department of Defense contracts totaling about $39 million.
That meant Harborne was already a successful cross-border businessman before Bitcoin existed.
The Bitfinex hack became the turning point
The event that changed the scale of Harborne’s wealth came in 2016, after Bitfinex was hacked and lost a large amount of Bitcoin. The exchange allocated roughly 36% of the losses across users and issued BFX tokens as compensation.
Harborne was a major Bitfinex customer at the time, so he received a large amount of BFX. ABMedia said the more important move came when market sentiment was highly negative and he bought additional BFX at discounted prices. Bitfinex later allowed holders to exchange BFX for company equity, turning Harborne from an exchange user into a shareholder.
From Bitfinex shareholder to major Tether holder
Documents disclosed later showed that, through a series of transactions, Harborne ultimately obtained about 12% of Tether. Part of that stake was held under his Thai name, Chakrit Sakunkrit, according to the report.
ABMedia noted that few people at the time would likely have expected USDT to become one of the world’s largest dollar stablecoins. As Tether’s profits and valuation surged, the equity Harborne acquired when Bitfinex was under severe pressure turned into an asset worth tens of billions of dollars.
The Sunday Times used a Tether valuation of about $200 billion in its 2026 estimate, putting the value of Harborne’s stake at around £17.7 billion and lifting his total net worth to £18.2 billion.
Business interests and political donations
Harborne remains active outside crypto, with interests spanning aviation, payments, and defense technology. The companies named in the report include AML Global, IFX Payments, Eclipse Aerospace, and the UK defense technology company QinetiQ.
He has also drawn wider public attention through political giving. The report says he shifted from supporting the Conservative Party to backing Nigel Farage’s Brexit Party/Reform UK, and in 2025 made a single £9 million donation to Reform UK.
ABMedia framed Harborne’s rise from aviation fuel businessman to major Tether shareholder as a story built not on launching a crypto venture, but on taking exposure to distressed Bitfinex-linked assets during the exchange’s most difficult period and later ending up with a path into Tether ownership.