Forget the American electorate. Donald Trump’s biggest fan may be a British businessman who likes to play the odds.

John Mappin, a media investor who owns Camelot Castle in Cornwall, has placed more than 15 wagers, totaling more than £2,000 (or $3,100), that Trump will secure the Republican presidential nomination, if not win the presidential election outright. Depending on the type of bet (nomination or presidential victory) — and the odds at the time it was placed — the payoffs range from 7-to-1 to more than 30-to-1. If Trump indeed becomes president and Mappin wins every bet he’s made, he stands to collect at least £40,000 (or $62,000).

Despite what a lot of experts say, Mappin is convinced that the billionaire entrepreneur is no political long shot. “I do think the media and the political pundits have completely underestimated where public sentiment is,” says Mappin. “Trump has a huge grass-roots following. And funnily enough, it’s not just amongst Republicans.”

Even with all his wagering, Mappin says that he’s “not really a gambler,” adding that he never opened an account with a bookie before deciding he wanted to bet on Trump. (Mappin has made most of his presidential wagers with William Hill, the leading British bookmaker.)

The bets are fully legal, too. Unlike the situation in the U.S., betting on political contests is allowed in Great Britain. And the American presidential race has become a popular betting pool. In March of this year, Paddy Power, another British bookmaker, said it had already taken in more than 5,000 wagers on the 2016 contest. “It’s a modern-day sports contest,” said Paddy Power spokesman Rory Scott at the time.

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William Hill executives admit that the surging Trump candidacy has caught them somewhat off guard. When the bookmaker started taking bets on the real estate tycoon-turned-TV star’s chances of becoming president, it had him as a 150-to-1 long shot. Now, Trump is a 10-to-1 contender.

Still, Trump is far from the favorite to be the next commander in chief — at least by the bookmaker’s rankings. The top slot goes to Hillary Clinton, who’s currently an even-money favorite. Other higher ranked candidates are Jeb Bush (7-to-2), Marco Rubio (7-to-1) and Scott Walker (12-to-1).

As for Mappin, the Trump bettor, he’s almost as colorful and controversial a character as the man he’s predicting will become president. Mappin says his family once earned a fortune in the British silver trade. And he’s now put his money to use by buying Camelot Castle — in the locale from where King Arthur hailed, Mappin notes — and turning it into a hotel of sorts, a kind of Downton Abbey that’s open to the public. Mappin is also well known as a member of the Church of Scientology.

Aside from placing big bets on Trump, Mappin is hoping to connect with the candidate in other ways. He’s planning on launching a television channel from his castle and producing a program interviewing celebrities and other prominent figures. Trump is on the must-have list. “I have extended an outreach,” Mappin says.