I am a legal migrant and now a British citizen, dual with the USA. I came over twenty years ago for two reasons. One, to do a highly skilled job that a British citizen could not do. I came over with two graduate degrees in a specialist subject. I then married a British man and wanted to be with him. It is not an easy process at all, and very costly.
https://migrationobservatory.ox.ac.uk/resources/commentaries/qa-immigration-fees-in-the-uk/
"Health and Care workers face the lowest cost from entry to citizenship (just under £5,100), because they do not have to pay the health surcharge. Outside of health and care, the total cost from entry to citizenship ranges from just over £11,200 for a Skilled Work visa holder with no family, to around £38,000 for a parent and child on a ten-year route to settlement. A skilled worker with a partner and two children would pay around £41,500 in total".
My various visas required a criminal check and biometrics (facial scan and fingerprints) which I paid for in addition to the visa fee, a document or two from every year I was here, the Britishness test, my tax documents, two character references, and I had to list any offence including traffic. I had an overdue parking meter charge from 35 years ago in the States for 10 dollars, and a 5-7 mph ticket for speeding from 1993, and had to write the DMV's in the USA to get the information and put it on the form, because you have to be of good character to be a British citizen. There is no such thing as a spent offense for an immigrant. I've been here 20 years and had not so much as a parking ticket. I even had to pay £350 to the Home Office for permission to get married outside an Anglican church (married in a civil ceremony)...that fee/scheme was later overturned by the EU Court of Human Rights, but I never got my money back from the Home Office. There was hysteria at the time over sham marriages, so hence this new scheme.
The vast majority of immigrants are legal, here to work or study, and most of those who study here go home. Small boats are a tiny percentage and are being used as a political football.
As @TreadSoftlyOnMyDreams noted, Our universities are in massive trouble partially because of the new visa restrictions for international students, which may mean tuition rises. Applications decreased by 16% across the board from international students..I know this as I just retired from a university affected by these changes. You'd be surprised how many graduate degree programmes in the UK function largely due to international students as tuition fees have been stagnant
If you read sources like Migration Observatory (University of Oxford), you'll see that according to the 2021 Census in England and Wales, 41% of those born abroad had a university degree, compared to 25% of people born in the UK. Migrants were more ethnically diverse, healthier, and more likely to live in privately rented accommodation
https://migrationobservatory.ox.ac.uk/resources/briefings/migrants-in-the-uk-an-overview/
I myself privately rented, then bought a house, and will buy another one. I have not taken one penny of benefits... I don't have children. I've used the NHS about three times...two pap smears, brith control, and for a bad back rectified by five weeks at an osteopath. The bad back was from overwork.
Lastly, predictions are that migration will decrease...from the University of Oxford: "In our baseline scenario, net migration falls to 337,000 by 2032, roughly similar to pre-Brexit levels. This decline results from assumed decreases in work and study visa migration following the early 2024 policy changes. It is offset by falling emigration in subsequent years. . . .That said, the conclusion that net migration is likely to fall from its 2022 peak holds true under a wide range of assumptions. Even if immigration for all categories remained at 2023 levels—including work visa holders, whose numbers have already declined sharply—projected net migration in the model still falls to around 500,000 due to rising emigration."
https://migrationobservatory.ox.ac.uk/resources/reports/why-are-the-latest-net-migration-figures-not-a-reliable-guide-to-future-trends/
So, there probably will be fewer migrants here anyhow. I love the UK, I love my British husband, but I don't love the demonisation of immigrants. It is just is really unfortunate.