3.3 Total numbers of stateless persons coming into contact with immigration control Given the weaknesses of the published datasets discussed above, the UK Border Agency’s management information was a source that was investigated in order to provide more indicative totals. However, as with the published datasets, problems with the identification and categorisation of stateless persons who come into contact with the UK Border Agency limits the reliability of this data. Similarly, the risk persists that not all stateless persons would have come into contact with the UK Border Agency or its predecessors. However, analysis of this data, combined with the published datasets, provides a more comprehensive basis upon which to try to estimate the total numbers of stateless persons coming into contact with immigration control. These are examined in turn below. Figure 1: Case records on CID in relevant categories by flavour of CID (2001-2010) NCID CID flavours Unspecified Nationality GCID Nationality Currently Unknown ICID ACID 0 500 1000 1500 2000 2500 Stateless Person (Article 1 of 1954 Convention) Number of cases ACID ICID GCID NCID TOTAL Stateless Person (Article 1 of 1954 Convention) 123 1012 1393 1002 3,530 Nationality Currently Unknown 17 2181 1498 188 3,884 Officially stateless 0 48 17 1 66 Unspecified Nationality 31 1691 2505 477 4,704 Stateless TOTAL 0 0 0 27 27 171 4932 5413 1695 12,211 Source: Management information request CPO11-1085 received 29 July 2011 from UKBA performance services. Please note the figures quoted are not provided under National Statistics protocols and have been derived from local management information and are therefore provisional and subject to change. 34 Mapping statelessness