A migrant is a person who has left their home country by choice, in order to seek a better life.Conflict or persecution not being the reason to do so .A migrant is not an asylum seeker or refugee.
Would hazard a guess and say the majority of channel crossing folk are simply migrants.
Still plenty of available housing and no waiting weeks to see your quack or schools that are chocka.
Country and system are overloaded.
Years and decades of unlimited mass immigration that nobody asked for or voted for.