Economic success comes down to factors including skills, the labour landscape, employment law and even racism. Some migration is not primarily for economic reasons, such as refugees and students.

What is clear is that there is a wide disparity in performance between and within nationalities. For instance, Bangladesh-born people can be said to do really badly. But this has a lot to do with the jobs they tend to come to, and there are improvements over time.

Crucially, we can see new migrants in poorly paid jobs - indicating how demand for cheap labour plays a key role in migration economics.