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The new sites are said to be scattered across countryside surrounding the French Channel port. Although they are much smaller than the “jungle”, reports say they are attracting dozens of newcomers each week. The revelation is bound to reignite fears of migrants massing in a bid to cross the Channel into Britain. It also comes a week after the Daily Express revealed that up to 200 former “jungle” residents had returned to the site of the flattened camp.

GETTY New migrant camps are springing up in Calais, the scene of the infamous Jungle site

Many of those at the new camps are children whose asylum claims were rejected by the Home Office earlier this month. They were taken to other locations but decided to head north again to escape grim living conditions in the outlying regions. One so-called “secret” camp lies on the edge of a small French village called Norrent-Fontes, which is around 20 miles from Calais. Although the camp has been there for eight years, its size has grown steadily and about 130 refugees now live there.

GETTY Migrants are still desperate to find a way into Britain

GETTY The camps are attracting new migrants every week despite being smaller than the Calais camp

GETTY Most of the migrants in the 'jungle' were from North African and Middle Eastern countries

We revealed last week how welfare workers believed the mostly male Jungle residents simply hid in the countryside after November’s operation to clear it.

This was bound to happen Charity worker

Although local police are arresting the men and returning them to designated centres elsewhere in France, many are getting through. One man told how he was trying “everyday” to evade border guards and smuggle himself aboard a boat to Dover. He added: “We try to get on a lorry. For us it’s horrible – better is the UK. “People there respect me there, here is hard. They are racist, it’s hard.”

Migrants clash with police across Europe Wed, February 15, 2017 Migrants clash with each other in over crowded camps across Europe. Play slideshow EPA 1 of 107 Moroccan Police look at immigrants trying to jump the six-meter-high fence in Ceuta, Spanish enclave on the north of Africa, 09 December 2016.

Clare Moseley, from the Care for Calais charity, said preparations were being made for the eventuality that migrants will return to the port city. “There are less refugees here at this moment in time than there were before but that, I see, as a temporary situation just like other evictions that have taken place,” she said. “We are going to return back to the situation where we have desperate refugees here living in even worse conditions and they are going to need our help.”

GETTY This is one of the new camps popping-up near the site of the old Jungle camp

GETTY Photo of the Calais 'jungle' camp taken in October 2015