BIG BROTHER WATCH AND OTHERS v. THE UNITED KINGDOM JUDGMENT and any reference in this Act to preventing or detecting serious crime shall be construed accordingly ...” 65. Section 6 provided that in respect of the intelligence services, only the Director General of MI5, the Chief of MI6 and the Director of GCHQ could have applied for an intercept warrant. 66. There were two types of intercept warrant to which sections 5 and 6 applied: a targeted warrant as provided for by section 8(1), and an untargeted warrant as provided for by section 8(4). 67. By virtue of section 9 of RIPA, a warrant issued in the interests of national security or for safeguarding the economic well-being of the United Kingdom ceased to have effect at the end of six months, and a warrant issued for the purpose of detecting serious crime ceased to have effect after three months. At any time before the end of those periods, the Secretary of State was able to renew the warrant (for periods of six and three months respectively) if he or she believed that the warrant continued to be necessary on grounds falling within section 5(3). The Secretary of State was required to cancel an interception warrant if he or she was satisfied that the warrant was no longer necessary on grounds falling within section 5(3). 68. Pursuant to section 5(6), the conduct authorised by an interception warrant had to be taken to include the interception of communications not identified by the warrant if necessary to do what was expressly authorised or required by the warrant; and the obtaining of related communications data. 69. Section 21(4) defined “communications data” as (a) any traffic data comprised in or attached to a communication (whether by the sender or otherwise) for the purposes of any postal service or telecommunication system by means of which it is being or may be transmitted; (b) any information which includes none of the contents of a communication (apart from any information falling within paragraph (a)) and is about the use made by any person— i. of any postal service or telecommunications service; or ii. in connection with the provision to or use by any person of any telecommunications service, of any part of a telecommunication system; (c) any information not falling within paragraph (a) or (b) that is held or obtained, in relation to persons to whom he provides the service, by a person providing a postal service or telecommunications service.” 70. The March 2015 Acquisition and Disclosure of Communications Data Code of Practice referred to these three categories as “traffic data”, “service use information”, and “subscriber information”. Section 21(6) of RIPA further defined “traffic data” as data which identified the person, apparatus, location or address to or from which a communication was transmitted, and information about a computer file or program accessed or run in the course of sending or receiving a communication. 18