Theresa May has vowed to fight Emmanuel Macron if he attempts to scrap British border controls in Calais and said that they benefit France as much as the UK.The Prime Minister said that Mr Macron, the new French President, has secured a “very strong mandate” and urged voters to put her in a similar “strong position” as she negotiates Brexit. She said that if she wins the election she will “sit down” with Mr Macron and discuss the Le Touquet agreement, under which British border officials can carry out border checks in France. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. During his campaign Mr Macron said that the Le Touquet agreement “must be renegotiated” amid concern in France about the “Jungle” camp in Calais.The Prime Minister said: “He has been elected with a very strong mandate. We must make sure that in the UK we also have a strong mandate to take a strong position into our negotiating table.”As for the Le Touquet agreement, actually it works for the benefit of both the UK and France and obviously in the government that’s elected after June 8 we will be sitting down and talking to Mr Macron and others about how that system has worked both to the benefit of France as well as to the benefit of the UK.”During the EU referendum David Cameron warned that the Calais “jungle” could move to Kent if Britain left the European Union.