Starmer's plan is as good as any other plan I've heard - not much use.
It seems as inevitable as climate change now. These guys are going to come here, then we have to look after them for x number of months while their (usually fake or heavily embellished) claim for political asylum is processed, knowing they may cause the sort of trouble that underemployed and frustrated young men tend to get involved in.
I've lived in a Middle Eastern country as an expat / temporary economic migrant. There are pleasant African men who work as security guards, 12 hours on, 12 hours off, every day, and surlier men who work on construction sites in the baking heat. These jobs are incredibly crappy by Western standards and they have to live in cramped and highly basic accommodation. Yet they pay gangmasters to get to this place and get these jobs!
We have been insulated from the fact that most of the world lives as peasants in poverty while we complain about not being allowed flexible working. Now those problems are landing on our shores.
One European country, don't know where, will elect the hard right who will put fences and gun turrets up around their borders and tell the EU to fuck off and mind their own business when they are chided for failing to follow the relevant agreements. Then enough of the rest will go down the same path that it becomes the norm.
We can do a few things first: ID cards, refusing more asylum claims, streamlining the appeal system against those refusals to a simple procedural check - but ultimately none of it will really work.