the destructions cause the roads to clog up in south-eastern england. bad news for the british economy, and anyone hoping to cross to france for the holiday season, so the british prime minister is under pressure. >> we'll take action across the board, starting with helping the french on their side of the border, we'll put in more fencing, resources, sniffer dog teams, more assistance in any way we can in terms of resources. >> reporter: over in calais the situation is complicated by french ferry workers, on strike protesting over job cuts. they blocked roads into the port. more chaotic scenes as migrants cin calais succeeded in getting around security men, dashing towards the channel tunnel terminal. these kinds of pictures alarmed people in britain, the numbers of migrants in calais tried to get into britain, a few thousands are small, given how many are going elsewhere in europe. >> what we are seeing is that a symptom of the fact that the world is in a grips, the worst refugee crisis since world war ii. the vast majority are hosted by the world's sm