Given how many NHS staff before 2016 were from EU countries and how effectively the racist scum in the UK population and in the ranks of the tory party have made them feel unwelcome, I don't think there is going to be a shortcut route for Labour or anyone else to 'improve' on the quality of care due to lack of qualified personnel!
@Paulos_the_fog
yes, sadly I think you are right.... the/that well has been well & truly poisoned!