The rub here is "skilled workers". Just after Brexit, the Boris Johnson Tory government adjusted immigration rules for "skilled" workers, and caused a civilisation-altering number of people (now known as the "Boriswave") to immigrate to the country, mostly from India, Africa, and other less developed areas. It's now known that almost every pay level and skill (or lack thereof) of job was eligible under the new rules, with some countries of origin, like Zimbabwe, having up to 10 dependents per worker on average IIRC. The same story has played out in the US with the "skilled" H1B visa scheme. People have lost all trust in governments to architect immigration laws in the interest of the natives, rather than giving big business carte blanche to import their own replacement workforce who will do any available job for the national minimum wage.