asked Her Majesty's Government:

What measures have been taken to address the problems found by electronic data capture analysis in August 2006 that demonstrated errors in the recording of prisoners' details including their names, prison number and nationality. [HL1151]

The C-NOMIS programme ensures a continuous cycle of data quality reporting on legacy systems that starts at least 20 weeks before site (prison establishment or probation area) implementation. Sites are required to “cleanse” the data and ensure accuracy before migration to the new system. This is monitored by the project and data quality metrics are produced every two weeks. High-level data-quality standards have been reviewed and approved for enforcement by senior business leads. All serious data quality issues are corrected prior to site implementation.