(1) The Terrorism Prevention and Investigation Measures Act 2011 is amended as follows.

(2) In section 12 (variation of measures) -

(a) after subsection (1) insert -

"(1A) The Secretary of State may by variation notice vary a relocation measure so as to substitute a different specified residence if the Secretary of State reasonably considers that -

(a) the variation is necessary for reasons connected with the efficient and effective use of resources in relation to the individual; and

(b) the relocation measure (as varied) remains necessary for purposes connected with preventing or restricting the individual's involvement in terrorism-related activity.

(1B) A "relocation measure" is a measure under paragraph 1(2) of Schedule 1 which requires the individual to reside at a specified residence within paragraph 1(3)(b) of that Schedule (requirement to reside at premises specified by Secretary of State other than individual's own residence).";

(b) in each of subsections (7), (8), (9) and (10), after "subsection (1)" insert "or (1A)";

(c) at the end insert -

"(11) Subsection (1A) does not limit the power under subsection (1)."