British Prime Minister David Cameron has pledged extra sniffer dogs and fencing in efforts to tackle the Channel Tunnel migrant crisis, describing the situation as “not acceptable”.

He spoke after chairing a meeting of the government’s emergency response committee ‘Cobra’ following a fourth night of disruption at the Eurotunnel terminal near Calais in France.

Despite reinforcements, French police are heavily outnumbered and reports suggest that more than 1,000 migrants tried to storm the tunnel overnight from Thursday to Friday to enter the UK illegally.

“Well the situation is not acceptable and it is absolutely this government’s priority to deal with it in every way we can, starting with helping the French on their side of the border,” Cameron said after the crisis meeting.

“We are going to put in more fencing, more resources, more sniffer dog teams, more assistance in any way we can, in terms of resources.”

#Calais migrants: David Cameron pledges extra sniffer dogs and fen