Long-term immigration to the UK dropped by 9% in the year to last September, according to figures published yesterday.
About 503,000 people came into the country over the period, compared with 555,000 in the previous 12 months.
Provisional data from the International Passenger Survey (IPS) also indicated the number of entrants from eastern European states that joined the EU in 2004, such as Poland and the Czech Republic, also dropped 55% to 45,000.
However, there was a sharp rise in the number of UK passports granted, up 58% from 129,375 in 2008 to 203,790 last year.
Net immigration over the year stood at 142,000, even although the number of British citizens leaving the country fell from 173,000 to 134,000.
The IPS is considered a good broad guide to migration movements, but does not take into account adjustments for asylum seekers, people who stay longer or less than intended, and migration to and from Northern Ireland.
Long-term immigrants are defined as those who plan to remain for more than 12 months.
The figures will be interpreted by Labour as evidence that its points-based system was starting to have an effect.
Several candidates in the party’s leadership contest have identified immigration as a key factor in its general election defeat.
The new government has committed itself to introducing a cap on non-EU immigration, although the level has yet to be set.
Immigration Minister Damian Green said: “These figures illustrate the scale of the immigration challenge facing the new government.
“It is now our duty to control immigration for the benefit of the UK and that is what I am determined to do.
“I believe that immigration has been far too high in recent years which is why we will reduce net migration back down to the levels of the 1990s – to tens of thousands rather than hundreds of thousands.
“Over the coming weeks and months the public will see us tackle this issue head on by introducing a wide range of new measures to ensure immigration is properly controlled, including a limit on work permits, actions on marriage and an effective system of regulating the students who come here.”