Nigel Farage’s company pocketed nearly £500,000 in two years, as he portrayed himself as a man of the people.
The anti-EU leader also pleaded for cash for his Brexit Party during afternoon tea at The Ritz in London.
Farage’s party is tipped to win the most votes across the UK in Thursday’s EU election.
Part of the former Ukip leader’s appeal is a carefully crafted image contrasting him with Westminster MPs and the “metropolitan elite”.
But research by the anti-Brexit People’s Vote group is revealing.
Companies House records show assets held by Farage’s firm, Thorn in the Side, soared from £77,893 in accounts up to date in May 2016 to £548,573 in May 2018.
A declaration he made to the European Parliament in 2017 revealed he gets €30,000 (£26,300) a month for “broadcast contracts” and €8757 (£7670) as an MEP.
Farage became a political pundit for Fox News in the US in January 2017.
He is chauffeured to events in a luxury Range Rover and earlier this year he admitted flying from London to Strasbourg on a private jet.
Ian Murray, the pro-EU Labour MP for Edinburgh South, said: “Nigel Farage has made himself rich as a snake oil salesman for Brexit. You don’t get more metropolitan elite than Farage.
“The wealthy career stockbroker turned 20-year MEP is trying to play the man of the people, but his divisive politics is in danger of ripping our country and economy apart for the benefit of the wealthy like him.
“He’s no more a man of the people than he’s a teetotal vegetarian.”
Anti-Brexit campaigners also discovered a video, apparently from last month, of Farage asking self-styled “Ritz rebels” – thought to be a group of right-wingers – to fund his new party.
In the clip, he says: “I’ve never been more determined to give the Establishment a proper kicking than I am right now.
“Any help, any support – whether it’s verbal, whether it’s getting your friends involved, whether it’s giving us money, whatever it is – we need all the help we can get.”
A spokesman for Farage said: “The people of this country do not hate success, they are not envious of success – they applaud success.
“They hate hypocrisy, and he is no hypocrite.”
Meanwhile, Lib Dem MEP Catherine Bearder is demanding a probe into whether Farage failed to declare up to £450,000 in benefits from tycoon Arron Banks, which he denies having received.
