Paragraph 11
In order that the ability to interfere with equipment may be maintained, to put in place and to maintain arrangements, agreed with the Secretary of State, to notify the Secretary of State within a reasonable time of—
(a)
proposed changes to telecommunications services or telecommunication systems to which obligations imposed by a technical capability notice relate;
(b)
proposed changes, to existing telecommunications services or telecommunication systems, of a description specified in the notice, and
(c)
the development of new telecommunications services or telecommunication systems.