# Council Decision of 23 September 2013 on the security rules for protecting EU classified information (2013/488/EU), Division 10: The initial security clearance for access to information classified CONFIDENTIEL UE/EU CONFIDENTIAL and SECRET UE/EU SECRET shall be based on a security investigation covering at least the last 5 years, or from age 18 to the present, whichever is the shorter, which shall include the following:

Extent: E+W+S+N.I.

(a) the completion of a national personnel security questionnaire for the level of EUCI to which the individual may require access; once completed, this questionnaire shall be forwarded to the competent security authority;
(b) identity check/citizenship/nationality status — the individual’s date and place of birth shall be verified and his identity checked. Citizenship status and/or nationality, past and present, of the individual shall be established; this shall include an assessment of any vulnerability to pressure from foreign sources, for example, due to former residence or past associations; and
(c) national and local records check — a check shall be made of national security and central criminal records, where the latter exist, and/or other comparable governmental and police records. The records of law enforcement agencies with legal jurisdiction where the individual has resided or been employed shall be checked.

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Source: https://www.legislation.gov.uk/eudn/2013/488/annex/I/division/III/division/n5/division/1/division/10 (the official version)
Page: https://openlegislation.uk/eu-decision-2013-488/annex-I/division-III/division-n5/division-1/division-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.