The Prime Minister has insisted Calais is safe and secure despite a "swarm" of migrants wanting to cross the Mediterranean and come to Britain.
David Cameron told ITV News migrants were "seeking a better life" because we have "jobs, a growing economy and it's an incredible place to live".
But he insisted it was now harder for migrants to get bank accounts and council houses and more legislation was being passed to make Britain a "less easy place to stay".
He added: "We need to protect our borders by working hand in glove with our neighbours, the French, and that is exactly what we are doing."
A joint police operation has been launched to target people-smugglers who profit from the desperate migrants trying to reach the UK.
Calais' Mayor has accused Cameron of treating the region with "contempt" - and called on authorities to open the border unless help is given
More fencing and extra sniffer dogs have been sent from the UK to Calais in a bid to curb migrant incursions into Britain.