British prime minister Gordon Brown will tighten immigration rules for thousands of foreign people seeking work in Britain, his Downing Street office confirmed today.
All skilled workers from outside the European Union will have to show they can speak English in a move that could block around 35,000 people coming to Britain.
The move, to be announced by Mr Brown in a speech to the Trade Unions Congress on Monday, was dismissed by the opposition Conservatives as "tough talk" that would have little effect on levels of immigration.
Business leaders said they were concerned the new regulations would be bad for the economy.
The Sunday Telegraphnewspaper said the announcement would be seen as a further shift to the right by Brown after moves to block supercasinos and a review of the decision to reclassify cannabis as a less dangerous drug.
Under immigration rules affecting workers from outside the European Union, applicants are split into categories entitled Highly Skilled, Skilled and Non-Skilled.
Only the first two can apply to settle permanently in Britain.
Highly skilled workers already have to show they are proficient in English. Monday's announcement will extend that requirement to the skilled category.
Around 96,000 workers in the skilled category entered Britain last year and around 35,000 would have failed the English test, a government source told the Sunday Telegraph.