http://www.legislation.gov.uk/uksi/1990/199/article/2/madeThe Official Secrets Act 1989 (Commencement) Order 1990Local GovernmentKing's Printer of Acts of Parliament2011-07-04OFFICIAL SECRETSThis Order brings into force on 1st March 1990 the Official Secrets Act 1989.2The Official Secrets Act 1989 shall come into force on 1st March 1990.