Yes they are illegal, there are violent criminal people smuggling gangs helping transport these people, thousands of them are in the UK right now having entered in the back of lorries, yes it’s in our interests to try and stop them , and we should be supporting those countries bearing the brunt of refugees. We should work with all the countries in Europe to halt this human trafficking. It cannot be just seen as a problem for just one state. If we want to beef up security in Calais to protect British transport and legitimate travellers then we should definitely pay our share and not expect others to do it all.