text: 233. Under section 2 of the Act, the Secretary of State shall not issue a warrant unless he considers that it is necessary: (a) In the interests of national security; (b) For the purpose of preventing or detecting serious crime; or (c) For the purpose of safeguarding the economic well-being of the United Kingdom. Sections 2-5 of the Act impose further conditions on how this power should be exercised. (These also govern considerations (a) and (b) above.) 234. The Interception Commissioner published, in the annex to his annual report for 1988, statistics on the number of warrants issued by the Home and Scottish Secretaries in each of the years 1985-1988. Both he and the Government consider that to publish figures for the Foreign and Northern Ireland Secretaries would be prejudicial to national security. Security Service 235. The Security Service Act 1989 places the Security Service on a statutory basis. It identifies in law the functions of the Security Service and the safeguards under which it may obtain and disclose information. It provides for an independent commissioner and tribunal to investigate complaints and to order remedies. CCPR/C/58/Add.6 page 54 236. Under the Act, the functions of the Security Service are confined to the protection of national security and to safeguarding the economic well-being of the United Kingdom from overseas threat. The Security Service may obtain only information which is necessary for the proper discharge of these functions and may disclose information only for these purposes or for the prevention or detection of serious crime. The Secretary of State is required to approve arrangements relating to the disclosure of information by the Security Service which may affect a person's employment. The warrant decisions of the Secretary of State are subject to continuing independent review by a judicial commissioner, who will produce an annual report to be laid before Parliament. 
analysis: The text primarily discusses the regulation of intelligence gathering and the use of warrants for national security, crime prevention, and economic well-being purposes. It appears to be related to government and law enforcement functions, but does not explicitly mention any specific economic or environmental issues.