Finally, issues arise in respect of how a nationality category is allocated to an individual case file on CID. After investigation it appears that case owners and data analysts do not have a consistent approach to this issue.67 This means that these categorisations may be used arbitrarily or inconsistently. This could result in a stateless person’s application being assigned, in error, to a nationality associated with their country of former habitual residence. Such errors in categorisation could contribute to a significant undercount of the numbers of stateless persons in the published statistics. The problems with the identification and categorisation of stateless persons indicate that caution has to be displayed in analysing the relevant data from the Home Office’s published immigration control statistics. Despite these challenges, an analysis of the relevant published datasets was attempted to identify trends in the numbers and profiles of stateless persons identified. 67 See section 4.6 in Chapter 4. in the United Kingdom 33