Updated to 29 May 2026 (Act No. 11 of 2026 and S.I. No. 217 of 2026)

All effects below are reflected in the most recent Revised Act.

Contents

Commencement

Section Commencement Commencement Information
Ss. 1-12 1 June 2006 Criminal Law (Insanity) Act 2006 (Commencement) Order 2006 (S.I. No. 273 of 2006), art. 2
S. 13(1) Not yet commenced. Requires commencement order under S. 26(2)
Ss. 13(2)-(10) 1 June 2006 Criminal Law (Insanity) Act 2006 (Commencement) Order 2006 (S.I. No. 273 of 2006), art. 2
Ss. 14-26 1 June 2006 Criminal Law (Insanity) Act 2006 (Commencement) Order 2006 (S.I. No. 273 of 2006), art. 2
Schs. 1, 2 1 June 2006 Criminal Law (Insanity) Act 2006 (Commencement) Order 2006 (S.I. No. 273 of 2006), art. 2

Amendments and other effects

How Affected Affecting Provision Commencement Commencement Source
Transfer of cert. functions under Finance (Transfer of Departmental Administration and Ministerial Functions) Order 2011 (S.I. No. 418 of 2011), arts. 1(2), 3 & sch. 1
S. 1 amended Mental Health Act 2026 (11/2026), s. 209(a)-(c) Not yet commenced. Commencement order required under s. 1(2)
  Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 2, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 3(2) amended Mental Health Act 2026 (11/2026), s. 210(a) Not yet commenced. Commencement order required under s. 1(2)
S. 3(2A) inserted Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 3, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 3(3) amended Mental Health Act 2026 (11/2026), s. 210(b) Not yet commenced. Commencement order required under s. 1(2)
S. 3(4) substituted Mental Health Act 2026 (11/2026), s. 210(c) Not yet commenced. Commencement order required under s. 1(2)
S. 4(3)(aa) amended Mental Health Act 2026 (11/2026), s. 211(a)(i) Not yet commenced. Commencement order required under s. 1(2)
S. 4(3)(aa) inserted Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 4(a), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 4(3)(b) substituted Mental Health Act 2026 (11/2026), s. 211(a)(ii) Not yet commenced. Commencement order required under s. 1(2)
S. 4(3)(b)(i) amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 4(b), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 4(3)(b)(ii) amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 4(c), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 4(5)(bb) amended Mental Health Act 2026 (11/2026), s. 211(b)(i) Not yet commenced. Commencement order required under s. 1(2)
S. 4(5)(bb) inserted Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 4(d), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 4(5)(c) substituted Mental Health Act 2026 (11/2026), s. 211(b)(ii) Not yet commenced. Commencement order required under s. 1(2)
S. 4(5)(c) form of warrant prescribed Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 31(2)(a) & form 6
S. 4(5)(c)(i) amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 4(e), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 4(5)(c)(ii) amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 4(f), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 4(6) substituted Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 4(g), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 4(6)(a) amended Mental Health Act 2026 (11/2026), s. 211(c)(i) Not yet commenced. Commencement order required under s. 1(2)
S. 4(6)(a) form of order prescribed Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 31(1) & form 5
S. 4(6)(b) substituted Mental Health Act 2026 (11/2026), s. 211(c)(ii) Not yet commenced. Commencement order required under s. 1(2)
S. 5(1)(a) amended Mental Health Act 2026 (11/2026), s. 212(a) Not yet commenced. Commencement order required under s. 1(2)
S. 5(2) amended Mental Health Act 2026 (11/2026), s. 212(b) Not yet commenced. Commencement order required under s. 1(2)
  Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 5, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 5(2) form prescribed under Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 64(2) & form 13
S. 5(3)(a) substituted Mental Health Act 2026 (11/2026), s. 212(c)(i) Not yet commenced. Commencement order required under s. 1(2)
S. 5(3)(a) form prescribed under Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 64(3) & form 14
S. 5(3)(b) amended Mental Health Act 2026 (11/2026), s. 212(c)(ii) Not yet commenced. Commencement order required under s. 1(2)
S. 5(3)(b) procedure & form prescribed under Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 64(4) & form 15
S. 5(3)(c) substituted Mental Health Act 2026 (11/2026), s. 212(c)(iii) Not yet commenced. Commencement order required under s. 1(2)
S. 5(4) amended Mental Health Act 2026 (11/2026), s. 212(d) Not yet commenced. Commencement order required under s. 1(2)
S. 6(1)(b) substituted Mental Health Act 2026 (11/2026), s. 213 Not yet commenced. Commencement order required under s. 1(2)
S. 7(5) deleted Court of Appeal Act 2014 (No. 18 of 2014), ss. 1(2), 65(a) 28 October 2014 Court of Appeal Act 2014 (Commencement) (No. 2) Order 2014 (S.I. No. 479 of 2014), art. 2(b), (c)
S. 8(1)(b) substituted Mental Health Act 2026 (11/2026), s. 214(a) Not yet commenced. Commencement order required under s. 1(2)
S. 8(3) amended Mental Health Act 2026 (11/2026), s. 214(b) Not yet commenced. Commencement order required under s. 1(2)
S. 8(5) amended Mental Health Act 2026 (11/2026), s. 214(c) Not yet commenced. Commencement order required under s. 1(2)
S. 8(6)(b) amended Mental Health Act 2026 (11/2026), s. 214(d) Not yet commenced. Commencement order required under s. 1(2)
S. 8(8) amended Mental Health Act 2026 (11/2026), s. 214(e) Not yet commenced. Commencement order required under s. 1(2)
S. 8(10) amended Mental Health Act 2026 (11/2026), s. 214(f) Not yet commenced. Commencement order required under s. 1(2)
S. 10 establishment day appointed Mental Health (Criminal Law) Review Board (Establishment Day) Order 2006 (S.I. No. 499 of 2006), art. 2
S. 11(2) amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 6, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 12 amended Mental Health Act 2026 (11/2026), s. 215(a) Not yet commenced. Commencement order required under s. 1(2)
S. 12(5) references construed 13/2021, s. 4(2), schedule 2 28 July 2021 Criminal Justice (Perjury and Related Offences) Act 2021 (Commencement) Order 2021 (S.I. No. 378 of 2021), art. 2
S. 12(6)(a) amended Mental Health Act 2026 (11/2026), s. 215(b) Not yet commenced. Commencement order required under s. 1(2)
S. 13 amended Mental Health Act 2026 (11/2026), s. 216 Not yet commenced. Commencement order required under s. 1(2)
S. 13(1) deleted Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(1) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(2) renumbered as s. 13(1) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(3) renumbered as s. 13(2) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(3)(b) substituted Defence (Amendment) Act 2007 (No. 24 of 2007), ss. 1(2), 11 & sch. 4
S. 13(3)(a) and (b)applied Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 31(2)(e)
S. 13(3)(a) form prescribed under Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 31(2)(b) & form 7
S. 13(3)(b) form prescribed under Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 31(2)(b) & form 7
S. 13(4) renumbered as s. 13(3) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(4)* amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 7(a), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
  Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(b) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(5) renumbered as s. 13(4) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(6) renumbered as s. 13(5) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(6)* amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 7(b), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
  Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(c) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(7) renumbered as s. 13(6) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(7)(b)* amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 7(c), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 13(8)* amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 7(d), 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 13(8) renumbered as s. 13(7) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(8)(a) substituted Defence (Amendment) Act 2007 (No. 24 of 2007), ss. 1(2), 11 & sch. 4
S. 13(9) amended Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(d) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(9) renumbered as s. 13(8) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13(10) renumbered as s. 13(9) Criminal Justice Act 2006 (No. 26 of 2006), ss. 1(2), 197(2)(a) 1 August 2006 Criminal Justice Act 2006 (Commencement) Order 2006 (S.I. No. 390 of 2006), art. 3
S. 13A amended Mental Health Act 2026 (11/2026), s. 217 Not yet commenced. Commencement order required under s. 1(2)
S. 13A inserted Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 8, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 13B inserted Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 8, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 13B(10)(b) substituted Mental Health Act 2026 (11/2026), s. 218(a) Not yet commenced. Commencement order required under s. 1(2)
S. 13B(10)(c) amended Mental Health Act 2026 (11/2026), s. 218(b) Not yet commenced. Commencement order required under s. 1(2)
S. 13C inserted Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 8, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2
S. 13C(3) substituted Mental Health Act 2026 (11/2026), s. 219 Not yet commenced. Commencement order required under s. 1(2)
S. 14(1)-(6) amended Mental Health Act 2026 (11/2026), s. 220(a)-(f) Not yet commenced. Commencement order required under s. 1(2)
S. 14(8) amended Mental Health Act 2026 (11/2026), s. 220(g) Not yet commenced. Commencement order required under s. 1(2)
S. 15 amended Mental Health Act 2026 (11/2026), s. 221(a) Not yet commenced. Commencement order required under s. 1(2)
S. 15(9)(a) amended Mental Health Act 2026 (11/2026), s. 221(b) Not yet commenced. Commencement order required under s. 1(2)
S. 15(9)(b) construction of references "General Register of Medical Practitioners" Medical Practitioners Act 2007 (No. 25 of 2007), ss. 1(3), 108(2) 16 March 2009 Medical Practitioners Act 2007 (Commencement) Order 2009 (S.I. No. 40 of 2009), art. 2
S. 16(2) amended Mental Health Act 2026 (11/2026), s. 222 Not yet commenced. Commencement order required under s. 1(2)
S. 17(3)(a) amended Mental Health Act 2026 (11/2026), s. 223 Not yet commenced. Commencement order required under s. 1(2)
S. 19(1) form & procedure prescribed under Court-Martial Rules 2008 (S.I. No. 205 of 2008), rls. 1(2), 25 & form 4
Sch. 1, para. 1 amended Mental Health Act 2026 (11/2026), s. 224 Not yet commenced. Commencement order required under s. 1(2)
  Criminal Justice (Miscellaneous Provisions) Act 2023 (24/2023), ss. 1(5), 72(a) 1 November 2023 Criminal Justice (Miscellaneous Provisions) Act 2023 (Commencement) (No. 2) Order 2023 (S.I. No. 525 of 2023), art. 3(g)
Sch. 1 para. 2 amended Criminal Justice (Miscellaneous Provisions) Act 2023 (24/2023), ss. 1(5), 72(b) 1 November 2023 Criminal Justice (Miscellaneous Provisions) Act 2023 (Commencement) (No. 2) Order 2023 (S.I. No. 525 of 2023), art. 3(g)
  Court of Appeal Act 2014 (No. 18 of 2014), ss. 1(2), 65(b) 28 October 2014 Court of Appeal Act 2014 (Commencement) (No. 2) Order 2014 (S.I. No. 479 of 2014), art. 2(b), (c)
Sch. 1, para. 7 amended Criminal Justice (Miscellaneous Provisions) Act 2023 (24/2023), ss. 1(5), 72(c) 1 November 2023 Criminal Justice (Miscellaneous Provisions) Act 2023 (Commencement) (No. 2) Order 2023 (S.I. No. 525 of 2023), art. 3(g)
Sch. 1, para. 8A inserted Criminal Justice (Miscellaneous Provisions) Act 2023 (24/2023), ss. 1(5), 72(d) 1 November 2023 Criminal Justice (Miscellaneous Provisions) Act 2023 (Commencement) (No. 2) Order 2023 (S.I. No. 525 of 2023), art. 3(g)
Sch. 2 amended Criminal Law Insanity Act 2010 (No. 40 of 2010), ss. 9, 11(2) 8 February 2011 Criminal Law (Insanity) Act 2010 (Commencement) Order 2011 (S.I. No. 50 of 2011), art. 2

SIs made under the Act

SectionSIs made under the Act
S. 3(2) Criminal Law (Insanity) Act 2006 (Designation of Centre) Order 2020 (S.I. No. 142 of 2020)
S. 10 Mental Health (Criminal Law) Review Board (Establishment Day) Order 2006 (S.I. No. 499 of 2006)

* Users should note the renumbering of the provisions of s. 13 by Criminal Justice Act 2006 when considering later amendments to that section.