The tale is now familiar: shouts are heard from inside a freight container and police are called. A cargo of human beings is discovered, some gravely ill. This happened last Sunday along the Thames at Tilbury docks. Thirty-five Afghans were discovered. One of them, Meet Kapoor, was already dead. Days later, 15 Kashmiris and Eritreans were found on a lorry pulled over in Somerset, dehydrated but alive.