Keith Vaz warned UKBA backlog was 'spiralling out of control'
The damning report follows comments by the chairman of the Home Affairs Select Committee, Keith Vaz, earlier this month.
Mr Vaz said the number of unresolved cases that UKBA is dealing with - more than 300,000 - is "spiralling out of control".
He said: "There are now about the same number of cases awaiting resolution by UKBA as there are people living in Iceland."
More top news
Dolce and Gabbana convicted of tax evasion
Fashion duo Domenico Dolce and Stefano Gabbana have been convicted of hiding hundreds of millions of Euros from the tax authorities.
Karzai: Afghanistan will not hold Taliban talks
Afghan president Hamid Karzai says his government will not take part in any peace talks involving the Taliban - at least for now.
Inflation and chaotic public services led us here
As demonstrations sweep across Brazil, protester Bruno Correia explains what has driven so many Brazilians onto the streets.