It needs to be less attractive to come here and settle. (And before I say more - the hotels that migrants are put up in are absolutely dreadful and the food inadequate, so the whole “oh, we put them up in hotels” shtick doesn’t fly for me. I work in this sector.)
ID cards. It is incredibly easy to work cash in hand / undocumented in the UK.
Fast processing of arrivals, and assessment. That means money to the UKBA or whatever we term the border agency.
Effective deportation. Rwanda, France, x country - make a decision, ratify it, and let people understand that that will be the outcome if you are not genuine.
But the other side of the issue is what KS and government aren’t acknowledging right now - we have a falling birth rate and need more people. What’s being done to attract the right migrants?