Corby - The answer to your question about the accessibility to the welfare system is admirably demonstrated by the fact that two if the biggest hotels in the city where I live have been instantly booked to capacity to house migrants.
The fact that, on arrival, these people have a warm roof over their heads, and food in their stomachs, means they have leapfrogged over any and all of the homeless people who sleep on the streets outside those hotels every night, and beg for money for food every day.