The two unidentified migrants were pictured lying face down on top of the haulage vehicle as it left the Eurotunnel terminal on Friday morning
Entrance: Migrants hang on to the roof of the freight truck. (Getty)
Hanging on for dear life, two men make their way into Britain on the roof of a lorry as the migrant crisis shows no sign of abating.
The two unidentified migrants were pictured lying face down on top of the haulage vehicle as it left the Eurotunnel terminal in Folkestone on Friday morning.
The amazing moment was captured on camera as government ministers discussed ways of easing the crisis.
The Ministry of Defence (MoD) is understood to be in the early stages of developing plans which could involve using land owned by the department to free up space on the M20.
MoD land around Folkestone could be used as a temporary lorry parks, according to the Daily Telegraph.
In France, meanwhile, police used batons and tear gas to try and control the migrants getting on trains and lorries to the UK, but appeared to be fighting a losing battle.
One astonishing picture even showed a man dragging a young child over a barbed wire fence with him.
David Cameron, who has returned to the UK after a four-day tour of south-east Asia, will head to Westminster to chair a meeting of the Government's emergency Cobra committee this morning.
It is understood he will ask ministers and officials to see whether more can be done to address the situation at the port and the Channel Tunnel railhead at Coquelles.
The meeting comes after Mr Cameron blamed the chaos at Calais on a "swarm" of migrants crossing the Mediterranean and travelling through Europe.
French security and police were again dispatched to prevent desperate migrants from gaining illegal access to the Channel Tunnel following a week of unrest in Calais.
The situation in Calais has threatened to bring the cross-Channel haulage industry to a halt, with long queues at border control points in England and France.
As the situation rumbled into a fourth night of disorder, up to a hundred migrants roared as they steamed through police lines at a petrol station near the terminal to gain access to the tunnel.
French gendarmes and riot police at first were overwhelmed by the numbers coming at them but were able to gain control of the situation.
Officers, some with their batons drawn, formed a cordon backed up by riot vans.
But they could not prevent the men, women and children, mainly from East African and Arab countries, from bringing the road out of the tunnel in Coquelles to a standstill.
They watched as three or four teenage migrants climbed over a fence but later came back when they realised they had hit a dead end.
Afterwards Eurotunnel said its French platform was unavailable due to "security reasons".
A spokesman said: "Due to overnight activity around our French terminal, timetables are disrupted from both directions."