LONDON — Japanese firms are threatening to review future plans to invest in Britain if the new government follows through with its proposal to put an annual cap on immigration levels.

Corporate executives have told ministers that moves to limit the number of skilled people from outside the European Union who can be employed in Britain will seriously harm their businesses.

Japanese firms are particularly concerned about plans to curb the number of senior staff who can engage in short-term intracorporate transfers, as well as limits on recruiting skilled staff from outside the EU.