By Marcus Leach

Prime minister David Cameron has vowed to reduce the levels of immigration in the UK to what they were in the 1980s.

Despite this bold statement Mr Cameron later went on to say that the UK will "always be open to the best and brightest from around the world."

Under government measures, and on the back of Labour claiming the government was failing to deliver on immigration, the prime minister will look to implement a comprehensive and effective plan aimed at reducing immigration.

The government aim to cut the current limit that sits at around 200,000 to just "tens of thousands" by 2015, with the introduction of tighter caps on the number of non-EU migrants.

This is being split into monthly allocations, with a total of 4,200 available for April and 1,500 each month after that. However, non-European Union workers who earn more than £150,000pa will be excluded from this cap.

Scientists will also be given "a significant advantage" in coming to the UK, as firms attempt to fill jobs where there are staff shortages.

"What we don't want is for this to be a hugely attractive destination for people who only want a passage to Britain," In a speech outlining the government's policy, Mr Cameron will say.

"So we are cracking down on the abuses of the system."

Mr Cameron will call for a "sober" debate, which is "clear-headed about not only the benefits of immigration but also its impact on our public services, communities and society".

"This time last year, we said we would listen to people's concerns and get immigration under control.

"Today I can confidently say that we are getting there.

"If we take the steps set out today, and deal with all the different avenues of migration, legal and illegal, then levels of immigration can return to where they were in the 1980s and 90s, a time when immigration was not a front-rank political issue.

"And I believe that will mean net migration to this country will be in the order of tens of thousands each year, not the hundreds of thousands every year that we have seen over the last decade.

"Yes, Britain will always be open to the best and brightest from around the world and those fleeing persecution.

"But with us, our borders will be under control and immigration will be at levels our country can manage.

"No ifs. No buts. That's a promise we made to the British people. And it's a promise we are keeping."