Mental Health Act 1983

Type Public General Act
Publication 1983-05-09
Last updated 2026-04-06
State In force
Department Statute Law Database
articles Not indexed
Reform history JSON API
760

Words in s. 143(3) inserted (E.W) (1.10.1997) by 1997 c. 43, ss. 55, 57(2), Sch. 4 para. 12(18); S.I. 1997/2200, art. 2

761

Word in s. 143(3) substituted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 37(5)(b)(ii), 56 (with Sch. 10); S.I. 2008/1900, art. 2(l) (with art. 3, Sch.)

762

S. 143(3A)-(3E) inserted (1.4.2008) by Mental Health Act 2007 (c. 12), ss. 47(3), 56 (with Sch. 10); S.I. 2008/745, art. 3(g)

764

Words in definition of "absent without leave" in s. 145(1) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 32, 56, Sch. 3 para. 34(2) (with Sch. 10); S.I. 2008/1900, art. 2(i) (with art. 3, Sch.)

766

Definition of "approved clinician" in s. 145(1) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 14(5), 56 (with Sch. 10); S.I. 2008/1900, art. 2(b) (with art. 3, Sch.)

767

Definition of "approved mental health professional" in s. 145(1) substituted (3.11.2008) for definition of "approved social worker" by Mental Health Act 2007 (c. 12), ss. 21, 56, Sch. 2 para. 11(2) (with Sch. 10); S.I. 2008/1900, art. 2(d) (with art. 3, Sch.); S.I. 2008/2561, art. 2(b) (with art. 3, Sch.)

768

Definition of "community patient" in s. 145(1) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 32, 56, Sch. 3 para. 34(3) (with Sch. 10); S.I. 2008/1900, art. 2(i) (with art. 3, Sch.)

769

Definition of "community treatment order" in s. 145(1) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 32, 56, Sch. 3 para. 34(3) (with Sch. 10); S.I. 2008/1900, art. 2(i) (with art. 3, Sch.)

770

Definition of "the community treatment period" in s. 145(1) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 32, 56, Sch. 3 para. 34(3) (with Sch. 10); S.I. 2008/1900, art. 2(i) (with art. 3, Sch.)

771

Definition of "Health Authority" in s. 145(1) omitted (1.3.2007) by virtue of National Health Service (Consequential Provisions) Act 2006 (c. 43), ss. 2, 8(2), Sch. 1 para. 70(a) (with Sch. 3 Pt. 1)

772

Definition of "high security psychiatric services" in s. 145(1) inserted (1.4.2000) by 1999 c. 8, s. 65, Sch. 4, para. 69(2)(a); S.I. 1999/2793, art. 2(3)(a), Sch. 3

773

Words in definition of "high security psychiatric services" in s. 145(1) substituted (1.3.2007) by National Health Service (Consequential Provisions) Act 2006 (c. 43), ss. 2, 8(2), Sch. 1 para. 70(b) (with Sch. 3 Pt. 1)

774

Words in definition of "hospital" para. (a) in s. 145(1) substituted (1.3.2007) by National Health Service (Consequential Provisions) Act (c. 43), ss. 2, 8(2), ({Sch. 1 para. 70(c)} (with Sch. 3 Pt. 1)

775

Words in definition of "hospital" in s. 145(1) inserted (1.10.2007) by Mental Health Act 2007 (c. 12), ss. 46(3)(a), 56 (with Sch. 10); S.I. 2007/2798, art. 2(g)

776

Definitions of “hospital direction” and “limitation direction” inserted (E.W but unlimited in so far as it confers a power or imposes a duty on a court-martial or a Standing Civilian Court) (1.10.1997) by 1997 c. 43, s. 55, Sch. 4 para. 12(19) (with s. 57(4)(8); S.I. 1997/2200, art. 2

777

Definition of "Local Health Board" in s. 145(1) inserted (1.4.2007) by The References to Health Authorities Order 2007 (S.I. 2007/961), art. 3, Sch. para. 13(13)(i)

778

Words in definition of "the managers" in s. 145(1) substituted (1.3.2007) by National Health Service (Consequential Provisions) Act 2006 (c. 43), ss. 2, 8(2), Sch. 1 para. 70(d)(i) (with Sch. 3 Pt. 1)

779

Words in definition of "the managers" in s. 145(1) substituted (1.3.2007) by National Health Service (Consequential Provisions) Act 2006 (c. 43), s. 2, Sch. 1 para. 70(d)(ii) (with Sch. 3 Pt. 1)

780

Words in definition of “the managers” in s. 145(1) substituted (28.6.1995 for certain purposes, otherwise 1.4.1996) by 1995 c. 17, ss. 2(1)(3), 8, Sch. 1 para. 107(14)(b)

781

Words in definition of "the managers" in s. 145(1) substituted (1.4.2007) by The References to Health Authorities Order 2007 (S.I. 2007/961), art. 3, Sch. para. 13(13)(ii)

782

Definition of "the managers" para. (b) in s. 145(1) repealed (1.4.2000) by 1999 c. 8, ss. 41(2), 65(2), Sch. 5; S.I. 1999/2793, art. 2(3)(a), Sch. 3

783

Definition of “the managers” para. (bb) in s. 145(1) inserted by National Health Service and Community Care Act 1990 (c. 19, SIF 113:2), s. 66(1), Sch. 9 para. 24(9)

784

Words in definition of "the managers" in s. 145(1) repealed (E.W.) (14.4.1994) by 1994 c. 6, ss. 1, 2(2)(3)

786

Words in definition of "the managers" in s.145(1) inserted (1.10.2007) by Mental Health Act 2007 (c. 12), ss. 46(3)(b), 56 (with Sch. 10); S.I. 2007/2798, art. 2(g)

787

Words in definition of "medical treatment" in s. 145(1) substituted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 7(2), 56; S.I. 2008/1900, art. 2(b) (with art. 3, Sch.)

788

Definition of "mental disorder" in s. 145(1) substituted (3.11.2008) for the definitions of "mental disorder", "severe mental impairment", "mental impairment" and "psychopathic disorder" by Mental Health Act 2007 (c. 12), ss. 1, 56, Sch. 1 para. 17 (with Sch. 10); S.I. 2008/1900, art. 2(a) (with art. 3, Sch.)

789

Definition of "mental nursing home" in s 145(1) repealed (1.4.2002) by 2000 c. 14, s. 117(2), Sch. 6; S.I. 2001/4150, art. 3(3) (subject to art. 4); S.I. 2002/920, reg. 3(3)(g) (subject to transitional provisions in Schs. 1-3 and art. 3(5)-(10))

790

Words in definition of "patient" in s. 145(1) repealed (1.10.2007) by Mental Capacity Act 2005 (c. 9), ss. 67(1)(2), 68(1)-(3) (with ss. 27, 28, 29, 62), Sch. 6 para. 29(7),{ Sch 7}; S.I. 2007/1897, art. 2(d)

791

Definition of "registered establishment" in s. 145(1) inserted (1.4.2002) by 2000 c. 14, s. 116, Sch. 4 para. 9(10)(d); S.I. 2001/4150, art. 3(3) (subject to art. 4); S.I. 2002/920, reg. 3(3)(d) (subject to transitional provisions in Schs. 1-3 and art. 3(4)-(10))

792

Definition of "the responsible after-care bodies" in s. 145(1) repealed (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 55, 56, Sch. 11 Pt. 5; S.I. 2008/1210, art. 2(d) (with art. 4)

793

Definition of "the regulatory authority" in s. 145(1) inserted (1.4.2009) by Health and Social Care Act 2008 (c. 14), ss. 52, 170, Sch. 3 para. 13; S.I. 2009/462, arts. 1(1)(b), 2, Sch. 1 para. 33

794

Definition of "the responsible hospital" in s. 145(1) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 32, 56, Sch. 3 para. 34(3) (with Sch. 10); S.I. 2008/1900, art. 2(i) (with art. 3, Sch.)

795

Definition of “Special Health Authority” in s. 145(1) inserted (28.6.1995 for certain purposes, otherwise 1.4.1996) by 1995 c. 17, ss. 2(1)(3), 8, Sch. 1 para. 107(14)(c)

796

Words in definition of "Special Health Authority" in s. 145(1) substituted (1.3.2007) by National Health Service (Consequential Provisions) Act 2006 (c. 43), ss. 2, 8(2), Sch. 1 para. 70(f) (with Sch. 3 Pt. 1)

797

Definition of "special hospital" in s. 145(1) repealed (1.4.2000) by 1999 c. 8, s. 65, Sch. 4, para. 69(2)(b), Sch. 5; S.I. 1999/2793, art. 2(3)(a), Sch. 3

798

Definition of "supervision application" in s. 145(1) repealed (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 55, 56, Sch. 11 Pt. 5; S.I. 2008/1210, art. 2(d) (with art. 4)

799

Definition of "standard scale" in s. 145(1) repealed (5.11.1993) by 1993 c. 50, s. 1(1), Sch. 1 Pt. XIV Group. 2.

800

S. 145(1AA) inserted (1.4.2000) by 1999 c. 8, S. 65(1), Sch. 4, para. 69(3); S.I. 1999/2793, art. 2(3)(a), Sch. 3

801

S. 145(1AB) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 4(10), 56; S.I. 2008/1900, art. 2(b) (with art. 3, Sch.)

803
804

S. 145(2) repealed (5.11.1993) by 1993 c. 50, s. 1(1), Sch. 1 Pt. XIV Gp. 2.

805

Words in s. 145(3) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 32, 56, Sch. 3 para. 34(4) (with Sch. 10); S.I. 2008/1900, art. 2(i) (with art. 3, Sch.)

806

S. 145(4) inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 7(3), 56 (with Sch. 10); S.I. 2008/1900, art. 2(b) (with art. 3, Sch.)

807

Words in s. 146 omitted (E.W.) and repealed (28.10.2008) by virtue of Mental Health Act 2007 (c. 12), ss. 39, 55, 56, Sch. 5 para. 20, Sch. 11 Pt. 7 (with Sch. 10): S.I. 2008/2788, art. 2 and the same words repealed (S.) (3.11.2008) by Adult Support and Protection Act 2007 (asp. 10), ss. 77(2), 79, Sch. 2; S.S.I. 2008/49, art. 2 (as amended by S.S.I. 2008/116, art. 2 and S.S.I. 2008/314, art. 3)

809

Words in s. 146 omitted (E.W.) and repealed (3.11.2008) by virtue of Mental Health Act 2007 (c. 12), ss. 32, 55, 56, Sch. 3 para. 35, Sch. 11 Pt. 5 (with Sch. 10); S.I. 2008/1210, art. 2(d) (with art. 4) and the same words repealed (S.) (3.11.2008) by Adult Support and Protection Act 2007 (asp. 10), ss. 77(2), 79, Sch. 2; S.S.I. 2008/49, art. 2 (as amended by S.S.I. 2008/116, art. 2 and S.S.I. 2008/314, art. 3)

813

S. 149(3) repealed (22.7.2004) by Statute Law (Repeals) Act 2004 (c. 14), s. 1(1), {Sch. 1 Pt. 17 Group 8}

815

Pt. 4A (ss. 64A-64K) inserted (1.4.2008 for s. 64H for certain purposes, otherwise 3.11.2008 for ss. 64A-64K) by Mental Health Act 2007 (c. 12) , ss. 35(1) , 56 (with Sch. 10 ); S.I. 2008/745 , arts. 2(d), 3(e); S.I. 2008/1900 , art. 2(k) (with art. 3, Sch.)

817

Words in Sch. 1 Pt. 1 para. 1 inserted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 32, 56, Sch. 3 para. 36(2) (with Sch. 10); S.I. 2008/1900, art. 2(i) (with art. 3, Sch.)

818

Words in Sch. 1 Pt. I para. 1 substituted (1.4.1996) by 1995 c. 52, ss. 2(8), 7(2)

819

Word in Sch. 1 Pt. 1 para. 1 substituted (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 36(4), 56 (with Sch. 10); S.I. 2008/1210, art. 2(c) (with art. 4)

831

Words in Sch. 1 para. 9(b) substituted (1.4.1996) by 1995 c. 52, ss. 1(2), 7(2), Sch. 1, para. 14

840

Words in Sch. 1, Pt. II, para. 3(c) substituted (1.4.1996 with application as mentioned in s. 3(3) of substituting Act) by 1995 c. 52, ss. 3(2)(3), 7(2)

841

Words in Sch. 1 Pt. II immediately following para. 5(a) repealed (1.10.1997) by 1997 c. 43, ss. 49(4)(a), 56(2), Sch. 6; S.I. 1997/2200, art. 2

842

Sch. 1 Pt. II para. 5(c) and the word “and” immediately preceding it inserted (1.10.1997) by 1997 c. 43, s. 49(4)(b); S.I. 1997/2200, art. 2

845

Sch. 2 para. 1(b)(c): Functions of the Lord Chancellor, so far as they are exercisable by him in relation to Wales, to be exercised only with the agreement of or after the consultation with the Assembly of Wales (1.7.1999) by S.I. 1999/672, art. 5, Sch. 2

847
852

Words in Sch. 2 para. 4 repealed (3.11.2008) by Mental Health Act 2007 (c. 12), ss. 38(7)(b), 55, 56, Sch. 11 Pt. 6 (with Sch. 10); S.I. 2008/1900, art. 2(m)(p) (with art. 3, Sch.)

876

Sch. 4 para. 19 repealed (22.7.2004) by Statute Law (Repeals) Act 2004 (c. 14), s. 1(1), {Sch. 1 Pt. 17 Group 8}

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