Her remarks are a far cry from the negative remarks of incumbent president Francois Hollande, who previously said Britain must "pay the price" for leaving the crumbling Brussels bloc.
The Front National leader said: "What is the point in punishing a country? It is senseless, unless you think the EU is a prison, and you are condemned if you escape.
Marine Le Pen has promised to 'rebuild… damaged relations' with the UK if elected
I want to rebuild our damaged relations with the United Kingdom
Marine Le Pen
"I want to rebuild our damaged relations with the United Kingdom."
"A people decides its own destiny. You cannot force a country to do something that is against its own interests, or against the democratic process."
She also moved to reassure French nationals living in Britain that none of her policies would be "anti-English" and that "all existing contracts" with Britain would be upheld.
Le Pen is expected to win the first round of the presidential voting in April Get to know Marine Le Pen Sat, January 28, 2017
Marine Le Pen is a French politician who is the president of the National Front, a national-conservative political party in France and one of its main political forces.
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A French politician who is the president of the National Front (FN), a national-conservative political party in France and one of its main political forces.
The 48-year-old also hailed Brexit as the beginning of a domino effect which led to the election of Trump, and a move which will help dismantle the EU.
She told the Telegraph: "Brexit has been a powerful weapon for us. In the past our adversaries have always been able to say that there is 'no alternative' but now we have had Brexit, and then Trump, and Austria.
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"A whole psychological framework is breaking down. I think 2017 is going to be the year of the grand return of the nation state, the control of borders and currencies."
Le Pen has led the party since 2011
Le Pen has consolidated her position as the frontrunner in the first round of voting in the French presidential elections.
A recent poll put the anti-establishment candidate on 26 per cent of the vote compared to her nearest rival Emmanuel Macron, who snagged 19.5 per cent of the vote.
Former frontrunner Francois Fillon's chances of becoming president have been damaged after allegations the conservative candidate wrongfully paid his wife thousands of euros for work she did not do.
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