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.
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More than 20 people are still unaccounted for after a huge blaze broke out at the 'rave cave' club night.
President Michel Temer arrived in Chapeco to oversee the remaining repatriation of victims of the Colombia plane crash.
Most parts will be dry this afternoon, although there are a few showers out to the western fringes of Britain.