Reading Maya Goodfellow excellent book Hostile Environment there is a lot on migration in general. Not just about asylum seekers.
In fact one her arguments so far in the book is that the distinctions made between different kinds of migrants is part of the problem.
Take so called economic migrants. The mainstream discussion gets into how "we" need them. So then it goes into what kind of visas, what categories, skilled or unskilled etc
Ends up treating migrants as commodities not people.
Which is one of the problems with engaging with people who have concerns. One can end up accepting the parameters of the discussion without meaning to
And she says the distinction between skilled and unskilled isn't as commonsense and obvious as it may seem.
Looking at footnotes and this website came up
Our Migration Story: The Making of Britain presents the often untold stories of the generations of migrants who came to and shaped the UK.
www.ourmigrationstory.org.uk
It was designed for teachers. However it gives a lot of historical info across British history in short pieces that are accessible to read. Little case studies of the different migrants who came here from Roman times.
She mentioned it as she recounts in book how she was asked on radio show with Melanie Phillips. Who went on about Europe being white and immigration being unsettling.
That people who support migrants coming here are virtue signalling. Seen that kind of criticism in some posts here.