And billionaire Andrej Babiš accused EU bosses of pursuing a federalist agenda which was against most members wishes.
The leader of the Czech Republic’s anti-establishment ANO party, also told Brussels that Europeans do not want further integration.
His country’s second-wealthiest man, Babiš has been compared to US President Donald Trump for his populist policies and straight-talking style.
In an interview with the Daily Telegraph he said: “I’m not a Eurosceptic. But European politicians should seriously ask why the UK is leaving.
“They are dealing with the wrong issues in pursuing further integration.”
Czech voters look set to pin their hopes to the billionaire populist – who is running on a pro-business, anti-corruption platform – when they go to the polls on October 20 and 21.
Babiš, who is also prone to vulgar outbursts, leads the polls by double-digits, having shrugged off a scandal related to his businesses’ financial activity.
He also fired a warning to EU diplomats that Brexit shows they need to deal with immigration and security problems.
But he added he will not go after ‘Czexit’ if he does become Prime Minister.
The ANO party, which he founded in 2011, has called for the EU to close its borders and set up migrant camps overseas.
The billionaire has also promised to squash corruption that has gripped the Czech Republic since communism fell in 1989.
Many have pointed out that this echoes Trump’s pledge to US voters to ‘drain the swamp’.
His critics argue he is after so much power in his home country that he will ‘damage democracy’.
Police recently pressed fraud charges against Babiš over a €2million EU subsidy to one of his hotel developments.