Exclusive: union leaders say proposed changes are immoral and could threaten patient safety if there is staff exodus Exclusive: union leaders say proposed changes are immoral and could threaten patient safety if there is staff exodus Up to 50,000 nurses could quit the UK over the government’s immigration proposals, plunging the NHS into its biggest ever workforce crisis, research suggests. Keir Starmer has vowed to curb net migration, with plans to force migrants to wait as long as 10 years to