Report: UKBA let thousands of overseas students overstay
The backlog of 153,000 notifications could potentially have meant that thousands were wrongly allowed to remain in the country, the Chief Inspector of Borders and Immigration said.
The tip-offs were all reviewed by May this year, but Mr Vine said it must be an "ongoing priority" to make sure checks are carried out.
His team examined work at three UKBA offices in Sheffield, Beijing and Delhi.
More top news
A donkey and raccoon vie for Pudsey's BGT crown
A dancing raccoon and a painting donkey will try to steal Pudsey's crown on tonight's Britain's Got Talent.
Viewers' guide to the Eurovision Song Contest 2013
Your definitive viewing guide to the 58th annual Eurovision Song Contest in the Swedish city of Malmö.
'We Are Young' by Fun named the most streamed song
We Are Young by Fun Ft Janelle Monae has been named the most streamed song of the year.