France has begun to clear the 'Jungle' migrant camp in Calais in which around 7,000 people live in squalid conditions.

Migrants queued at reception points where they will be processed and taken to refugee centres across the country. Some have resisted being taken away and overnight reports showed violent confrontations with police. Others have told reporters they will return to Calais from wherever the authorities take them as they still want to get to Britain. 

There are around 1,300 unaccompanied children in the camp, some of whom Britain has agreed to accept under the 'Dubs amendment' rules, which grant refuge to the most vulnerable. French authorities are taking them to converted shipping containers for their own safety while the rest of the camp is demolished by bulldozers. 

However, aid workers have accused France and Britain of failing the child migrants, whose future remains uncertain.

Charities operating in the camp have criticised the slow pace at which British and French officials have processed the papers of children fleeing countries such as Syria, Afghanistan and Eritrea.

The UK government has prioritised children and youths who can claim family ties in Britain and on Friday a French Interior Ministry official said they were still negotiating over hundreds more with no such connections.

"All this should have been done a long time ago," Francois Guennoc from the charity Auberge des Migrants told Reuters.

Allaodil, a Sudanese boy who says he is 14, was wandering on Sunday through the Jungle's garbage-strewn mud alleyways, shivering underneath a blanket.

"My brother has been in the United Kingdom, in Glasgow, for three years and has a job there," said Allaodil in faltering English, adding that he wanted to join his elder sibling.

He said the British authorities were aware of his case but still did not know whether he would be granted asylum in Britain or forced to relocate in France.

With its makeshift shacks and poor sanitation, the Jungle has become a symbol of Europe's failure to solve the migration crisis and a sore point in relations between Britain and France.

France's Socialist government is demolishing the Jungle on humanitarian grounds, it says. Most migrants in the camp want to cross the narrow stretch of sea to Britain.

The Jungle and immigration more broadly are a divisive theme in campaigning before France's presidential election in April, with leading conservative candidates pledging to move the border with Britain from Calais to southern England.

Some conservative French politicians say Britain should take in all the Jungle's 6,500 inhabitants.

"This is an insult for those (French people)...who live here below the poverty line," said far-right lawmaker Marion Marechal-Le Pen, a niece of the National Front leader Marine Le Pen, speaking in a rural town in southeastern France.

Aid workers say hundreds of migrants may refuse France's plan to resettle them in reception centres across the country while their asylum requests are considered. France says those who refuse to move on from the Jungle face arrest.

"I'll stay here, whatever they say," said 24-year old Ali Ahmed, from Sudan, refusing to give up on getting to Britain. "I have seen worse than this. And prison wouldn't be so very different from the Jungle."

Additional reporting by Reuters.