(1) The Terrorism Prevention and Investigation Measures Act 2011 (the "2011 Act") is amended in accordance with subsections (2) to (6).

(2) For the italic heading before section 5, substitute "Duration of measures".

(3) In section 5 (two year limit for TPIM notices) -

(a) in subsection (3)(b), for "only one occasion" substitute "up to four occasions";

(b) in the heading, for "Two" substitute "Five".

(4) In section 12 (variation of measures), in subsection (9)(a), for "without being extended under section 5(2)" substitute "as mentioned in section 13(6)(a)".

(5) In section 13 (revocation and revival of TPIM notice) -

(a) in subsection (6)(a) -

(i) the words "without being extended under section 5(2)" become sub-paragraph (i);

(ii) at the end of that sub-paragraph (i) insert ", or

(ii) having been extended under section 5(2) on fewer than four occasions,";