A multi-million wall built to separate the Calais Jungle from passing trucks has finally been completed, two months after the camp was bulldozed and its thousands of refugee residents scattered around France.

The British-funded wall cost £2.3m. That's more expensive than the modern, wood-shelter camp which houses 2,500 refugees in nearby Dunkirk, or enough to house and support nearly 300 Syrian refugees in Britain for a year.

A four-metre high concrete barrier, it runs along a kilometre of the main road beside the razed Jungle camp, reinforcing a pre-existing tangle of wire fences.

Calais refugee camp evacuation Show all 15 1 /15 Calais refugee camp evacuation Calais refugee camp evacuation Refugees run past a fire in the makeshift migrant camp known as 'the jungle' in Calais, October 2016 AP Calais refugee camp evacuation French authorities say the closure of the slum-like camp in Calais will last approximately a week in what they describe as a "humanitarian" operation, October 2016 AP Calais refugee camp evacuation A painted message saying 'Bye Jungle' on a tent in the camp in Calais, October 2016 Getty Calais refugee camp evacuation Refugees set rubbish bins alight as a protest in the makeshift camp 'the Jungle' in Calais, France, October 2016 EPA Calais refugee camp evacuation French riot police advance through tear gas and smoke from a fire to disperse refugees throwing stones and lighting fires at the Jungle migrant camp Getty Calais refugee camp evacuation French CRS riot police secure an area on the eve of the evacuation and transfer of refugees to reception centers in France Reuters Calais refugee camp evacuation Journalists run away from smoke during clashes near a makeshift refugee camp known as 'the jungle' in Calais AP Calais refugee camp evacuation French CRS riot police secure an area on the eve of the evacuation and transfer of refugees to reception centers in Franc Reuters Calais refugee camp evacuation Migrants queue for transportation by bus to reception centres across France, from the 'Jungle' refugee camp in Calais Getty Calais refugee camp evacuation Refugees line-up to register at a processing centre in the 'jungle' near Calais, northern France, as the mass exodus from the migrant camp begins PA wire Calais refugee camp evacuation Refugees with luggage walk past a graffiti on a wall as they leave the 'Jungle' migrant camp, as part of a major three-day operation planned to clear the camp in Calais Getty Calais refugee camp evacuation French far-right Front National (FN) party's member of parliament Marion Marechal-Le Pen (L) delivers a speech next to a banner reading "They arrive in Vaucluse, no migrants in our place" as she attends a rally against the hosting of refugees in La Tour d'Aigues Getty Images Calais refugee camp evacuation French police forces secure the area near the 'Jungle' refugee camp in Calais Getty Calais refugee camp evacuation Refugees leave messages on their tents in the Jungle migrant camp Getty Calais refugee camp evacuation Refugees carry their belongings and transfer to reception centers in France

Tina Brocklebank of Help Refugees still works in a Calais warehouse, sending aid to nearby resettlement camps and to Paris, where thousands of refugees are now sleeping rough.

"It's a complete joke, a very costly political point-scoring exercise," she told the Independent. "That money could have been used to put a warm roof over refugees' heads. If refugees are seen in Calais, they're immediately taken to detention centres, so it's not a safe place for them to be anyway."

After the demolition, refugees were bussed to new camps around France, but in the confusion one in three child refugees from the camp went missing. Others were sleeping rough among the wreckage of the camp, or engaged in "forced labour" in resettlement centres like "prisons".

"There's been a huge decrease in donations and volunteers, but we still desperately need warm clothing, blankets, sleeping bags and volunteers," said Ms Brocklebank.

Calais 'Jungle' exodus: Charity boss likens refugee treatment to Nazi persecution

Calais mayor Natacha Bouchart attempted to block the construction of the wall, arguing it was unneccessary since the Jungle had been demolished, but this move was overturned in court by the local government – which stands to profit from construction in the Calais port area.

"Border regimes like the one in Calais fund corporates that make a killing from anti-migrant barriers, and that would have no need to exist if the borders were open," a spokeswoman for the Calais Research Network told the Independent.

The wall was built by Vinci, a construction company heavily involved in the €900 million expansion planned for the Calais port. Vinci subsidiary Sogea was paid by the French government to demolish sections of the Jungle.