Situation looks acute in Calais
Things look to be getting even worse at the moment. This article has some suggestions of ways people can help (donate stuff, or food, if you are near Calais, or money for the rest of us). The refugees seem to be supported only by small aid organizations via private donors at the moment and the population of people present is rising.
I was thinking about what to do with my September charity allotment (tiny these days, unfortunately) and I was thinking Florida but maybe it should be Calais.