Critical Function 3 : A service or operation the continuity of which a Category 1 responder needs to ensure, in order to meet its business objectives and/or deliver essential services
Cabinet Office, Lexicon of UK Civil Protection: A developing single point of reference for UK Civil Protection Terminology - Version 2.0.1, Emergency Responder Interoperability Lexicon, London, UK 2011. http://www.cabinetoffice.gov.uk/cplexicon, (Emr Mgt - Brit) {545}