253.The Secretary of State may, by order, change the types of activities which fall within the category of directed surveillance by providing that a type of directed surveillance will be treated as intrusive surveillance. Furthermore, he may, by order, provide that additional types of surveillance, which are not at present defined as directed or intrusive surveillance in section 26, will be covered by the Act and become capable of being authorised under Part II.
Other Authorisations Supplemental provision for Part II Section 47: Power to extend or modify authorisation provisions