Leeching skills from other countries is not a good thing to do. Not only can it deprive the donor country of needed skills, even if it doesn't it has the inevitable issues surrounding culture/training/communication/etc. differences.
Not training the needed necessary skills to one's own population is also an awful option, it's very short-sighted not to invest in one's own population but expecting the taxpayer to pay for a lifetime of welfare instead.
Short term work-arounds to existing problems should not be continually employed in order to ignore the real issue and push a fix further and further into the future; and only our descendants.
Not offering sufficient in the home labour market to attract applicants from there is a sure sign one needs to improve the job offer; not an indication that one should short circuit the way the markets work by grabbing folk with a lower expectancy of lower pay from outside the market. Rules for supply/demand should apply to labour just as it does to goods/services.
Too great an expectation of staff and too low a wage is no reason to go look for those willing to put up with it, or brought up in a society which by comparison, the job offer seems great. It is disrespecting both the existing UK workforce and those attracted from elsewhere.
Not so much welcome, more accepted as inevitable until we get a better management of the service with folk who know how to run it properly.