An examination of controlled archive cases showed that the security checks - which the agency stated were being done on these cases - had not been undertaken routinely or consistently since April 2011.
I also found that no thorough comparison of data from controlled archive cases was undertaken with other Government departments or financial institutions in order to trace applicants until April 2012.
This was unacceptable and at odds with the assurances given to the Home Affairs Select Committee that 124,000 cases were only archived after 'exhaustive checks' to trace the applicant had been made.
– Chief Inspector of Borders and Immigration John Vine
UK Border Agency (UKBA) staff dealt with a backlog of immigration cases so inefficiently that at one point 100,000 pieces of post were unopened, a report said today.
Chief Inspector of Borders and Immigration John Vine found that security checks were not properly carried out on old cases and that workers had failed to check the records of other Government departments.
Applications were placed into an archive of unresolved cases after "very minimal work", despite the agency assuring MPs that "exhaustive" checks had been carried out, he concluded.