And firms cannot profit from new technology unless they can flexibly match it with skilled workers, argues John van Reenen at the Centre for Economic Performance in London.
And some developing countries are actually keen to have more skilled emigration, argues Allan Findlay of Dundee University, one of the authors of the report.
Progressive constitutional thinkers, so skilled in arguing about social and civil rights, are out of practice in addressing such structural economic questions.
He has advocated a points system to favor more highly skilled migrants, arguing that the quality of immigrants deteriorated since national quotas were abolished in 1965.
Wilshaw, who is stepping down at the end of this year and has had a combative relationship with ministers during his five years at Ofsted, said the UK was ill-equipped to retrain its own skilled workers, arguing: "Vocational training in this country does not have the esteem and status that it should have".
"There is no easy way to discover or compare services and prices offered by local skilled people," argues Perera.
Proponents of increased high-skilled immigration argue, as in a document used at a Capitol Hill briefing for congressional staff on 24 April, that foreign workers are "good for America's workforce and economy" because they create "jobs for U.S.-born workers," increase patenting, and raise wages.
"An intense and effective process, mediation means they must make plans together, face-to-face, with the help of a skilled mediator – not argue it out in the divorce courts".
This matters, Mr Carter argues: skilled knowledge-workers, in particular, like to cluster in centres, and the spillover is what most boosts growth.Private-sector demand is now flat and the public purse flatter.
Without the UK's financial capacity to spend billions of pounds on acquiring the aircraft carriers, frigates and nuclear submarines to match its strategic ambitions, Scotland would lose tens of thousands of skilled manufacturing jobs, argue Labour, Liberal Democrat and Tory ministers.
Since the advantage is confined to less skilled positions, we argue that employers' payroll tax savings on NLH workers (which are either skill neutral or favor skilled NLH workers) cannot be the only explanation, suggesting that temporary migrant workers may have a productivity advantage over natives in less skilled and low paid jobs.
